when bitcoin becomes traceable that simply means that its already regulated   . scammers will be reduced drastically but like you guys said there are other scammers that will try to cope up with the new system so that is why that we must not be confident even if btc is traceable already but we shall double our safety measure's because scammers becames stronger on that moment      .  however i dont think that some will like the idea of a traceable crypto

I think Bitcoin and other cryptocurrencies transactions are already traceable but not entirely because if you look on the transaction made upon Blockchain you could the address of the reciever which only imply that you coule really trace it. In addition, even if it is traceable we cannot remove these scammers because like in fiat where it is fully regulated there are still some cases of scam. Therefore, scammers are inevitable they could adapt to the system and find other way to do their scheme.

Well the thing is bitcoins itself is not a currency which is too hard to trace , it can be done easily if everything is reversed by someone who knows all about it , it is actually very very open and people can easily fall into the hands of governmental bodies , the scammers might easily be tracked if the government employees people who are very efficient in this .
It is trackable.
You need KYC almost everywhere now .

I don't know what will I do if that happens. I mean I am with you if you want to expose scammers and maybe also hackers and criminals but bitcoin being traceable as a whole will be the worst for me since I will be having second thoughts on using it. Since to be honest you can follow transactions of your friends just by knowing its address but if you know who can recieve it and things like that, that is a different thing.

its a common misconception that bitcoin and other pseudo-anonymous crypto is untraceable
you are right , you have much better chances to go unnoticed stealing cash , bitcoin has been long ago traced by the likes of Chainalysis , Elliptic or Cipher trace
they are working with the authorities and ISP and VPN must give them info they request , do not be fooled by the "totally anonymous " and no logs claims by the way
scammer will always be present , it is the humans nature - where there is money there will be people who want to take them from you
sometimes I am amazed by the amount of attention this aspect of the cryptocurrencies is getting , as if there is nothing else to be discussing about it
fiat related crimes happen million times more often , yet every single incident with bitcoin is somehow news worthy

The further technology develops, the less privacy becomes for both a decent user and a cheater. 
Not so long ago, the VPN was anonymous.
Not anymore today.
Not so long ago, the TOR network was anonymous.
Not anymore.
There are strong players on the Internet, they can do anything.
The usual users are left - they can keep their anonymity less and less. We need to be more and more careful when we use the network.

And this process is developing.

We lose our anonymity and security.
Others are gaining unlimited power.

Why is this happening?
What's wrong with the basics of modern security systems?

That is true, there are many people thought that the cryptocurrency is not traceable but they are all wrong because it is really traceable. There are now many scammers that been arrested because they are traced by the government. Recently there is a group of scammers who steal more than a million dollars and they been arrested in my country. It is really good that the government are doing a great job to arrest the scammers all over the world. But there are scammers that are really smart that the government are having trouble to trace them.

Sad truth, but, there are countries who are focusing on cyber crime too but there are countries who has very less succeed win case with cyber crime such as Japan, so, be careful if the founder came from Japan and he's not Japanese, as I know someone who has been a founder of crypto exchange but he run away and he's from Japan, and although there are lots of police report already, he knows they can't sue him, he's really very clever.

Although, bitcoin transactions can not be reversed or refunded back. But, bitcoin transactions can be tracked or traced. You can even traced the address you sent bitcoin. Still, scam scheme never ceased, Scam schemes ranging from clicking of fake links sent to you through emails to ghost or fake exchanges. The best to do is to know the ways they are scamming so that we would not be their victims. One of the things that could reduce scam is KYC but all these can only reduce it but can not end it.