There is none that isn't risky if you ask me, both the human mistakes or hackers. Therefore they should be treated with so much concentration because at the end of the day it's still bitcoin we are still going to lose.

However, the reason why I think that hackers is way riskier than human errors is that hackers might come unexpected and could be very aggressive than minor human errors. A single hacking attempt on your wallet is possible of draining everything you have ever worked for in your whole life. Human errors can be easily controlled or stopped than hacking attacks.

There are many cases where a person's Bitcoins can be stolen through malware attacks, smart contract vulnerabilities or phishing attacks or hacks. However, much more is lost due to one's own personal carelessness or mistakes. Certainly, Bitcoin's security system is much stronger, but if the user does not properly store his necessary information and does not properly ensure the security of his own risks, then there is no chance of holding others responsible for losing Bitcoins.

There are many investors who initially deposit Bitcoins without being very careful. A person can lose his Bitcoins by not storing the seed phrases properly or sometimes by misrepresenting the Bitcoin address. In some cases, they can also make big mistakes like sharing their private keys with others and later lose their assets. If strong security measures are in place, it is not easy to steal Bitcoins through technical attacks, but if the user makes a mistake on their own, they can easily fall victim to the attack and lose everything.

I can accept it as an opinion but I do not think it is the fact because we need to prove it by data to consider it as a fact. For example, when some people lose their bitcoin because of phising. Does it considered that it is mainly the user's mistake or it is because of the attacker is just too smart so the users fall into the trap? In this case there will be always unclear border between human mistake and technical attacks as we should take a look at them case by case. This is why threat to Bitcoin cant be simplified to something as what you think where it is mainly being a problem of the users.

But that doesn't make it a threat to Bitcoin. I think the best way to put it is that we as humans can be our own biggest vulnerability, and that vulnerability can only put the Bitcoin we own at risk. Your own vulnerabilities can't be used to target and exploit everyone, unlike those of an exchange, which could affect its customers most of the time.

Of course, there are quite a number of vulnerabilities, especially when we give in to ignorance_{(i.e, things we clearly don't have an Idea about)}. And like you mentioned, phishing scams, pK exposure and signing malicious tx are good examples, but I wouldn't classify the sending of Bitcoin to a wrong address as a vulnerability, especially when it's accidental. I would prefer to call it a human error... although, vulnerabilities can come into play especially when dealing with clipboard malware.

Maybe you should should elaborate on what you mean by technical attacks because as far as I know, almost all bitcoin losses revolve around humans either directly or indirectly.

Direct human mistakes like losing the keys, sending to wrong address etc. Indirect mistakes including falling for scam either by connecting to fake sites, fake wallet, compromised wallet etc. I called this indirect mistake because the attack was planned by someone else.

I don't know what exactly you mean by technical attacks but I haven't seen where bitcoin itself was hacked or wallet got drained without any human involved either directly or indirectly. Bitcoin network itself has never been hacked before. So all losses comes from human.

While it is true, people do save their phrases and access on their PC very loosely so I would say that human error matters even there. Like if you have a folder on your pc labelled bitcoin, and in there you have all the information on how to access your wallet, then of course a hacker could get into it. The wallet itself is safe; yes, nobody can hack or crack into it. The crypto defence prevents that; it would take years for something like that to happen. But that doesn't mean people make mistakes.

I mean, not even that; we have people sending money to scam deals willingly, and that is why the worst thing that we have right now is the fact that we are not going to end up with anything safe as long as people are naive and gullible like that.

Anything that was developed is hackable; some just have top-notch security like Bitcoin, which makes it difficult for hackers, but all the errors don’t always come from users. At least with the recent happenings where Bitcoin wallets are being compromised, we can all agree that one can be extremely cautious of how they protect their seed, not clicking on phishing links, and still end up being a victim of a hack because of their choice of wallet and its security.

When we talk of loss of bitcoin we can't say stolen coins are lost because they are only lost to the user or owner but its still in the records of available bitcoins since they are always in move or transact and at the end some get frozen or seized by the exchanges or government authorities.

But when it comes to human mistakes like lost of keys and those bitcoins are lost forever, then we can't compare because its estimated that lost coins amongst the 21 million coins we have about 15% to 20% lost which is far above what i know is stolen but i could be wrong because some hacks are so huge that they can be up to billion dollars.

The problems the remains the hackers because human error nothing on bitcoin, my error threatens my wallet not bitcoin in general.
Just like the bank; the slightest error can rob you of all your savings but it has got nothing on the bank. The case of fiat is even worse because the slightest casualty can make you start from scratch.

It is advised that as an individual in this space you should practice self custody, because of anything goes wrong in the course of exchange, or maybe even an error from a third party, causes your wallet to be invaded, it still have got nothing on bitcoin.

At this point I don’t even think we should be bothered about bitcoin, everyone should have a protective strategy to secure their wallets. Wallets has been hacked, keys has been lost and lots more but bitcoin is still there.
So personally, I’ll say himan error affects just the individual.

Unfortunately, the great majority sorely lack advanced technical knowledge. Most of these crypto laymen would have to depend on the reviews, evaluations, and recommendations of so-called experts.

It's great that there are guidance. What's tragic, however, is that such expert guidance could still bring these ordinary people down the path to perdition. Coldcard, for example, was recommended by reputable Bitcoin personalities. It didn't end well to many.

In the same manner that it's always emphatically reminded to strictly buy hardware wallets directly or from authorized resellers only. It could still end in the same tragedy.

And, yeah, should we blame users when they install updates that are coming from inside the Electrum wallet itself?

Perhaps trust should be listed as a human error as well.