Hmm that's true but I don't understand this mindset. It is understandable for someone to keep holding their assets if they haven't bought them to gain profit with them, but if someone has bought an asset so that they can get some profit from it once it goes up, then it doesn't make sense to keep holding it when they are getting good profits from it even when they know they will get more opportunities for buying at a lower price in the future.

If someone is getting enough profits and they know that the market can start crashing very soon, they shouldn't hold in such situations. They should sell their assets, use some of it if they need and hold the rest of the liquid assets so that they can buy again when the market goes down because we know that Bitcoin moves in a cycle and if there is a bull run, there will be a bear run as well.

Investment is a personal decision and choice which one has been make a personal research, which Bitcoin is the best Coin among other alt-coins and keep increasing in every four years of Bitcoin halving has already taken place. Therefore investing only Bitcoin is not too Smart. Because they're already established alt-coins in the cryptocurrency marketplace, that has been stabilize in the difference strong exchange market.

While I believe that Bitcoin should be a necessary part of any investment portfolio, I can’t agree that it should be your exclusive investment. Historically speaking diversified investors have always had more success and staying power than those who put all their eggs in one basket. While I believe in Bitcoin, I’m not mad at anyone who wants to diversify their digital investment portfolio.

I have read many informative opinions from various people on this topic. I understand people love Bitcoin over any other alternative cryptocurrencies and this is absolutely fine.
Bitcoin is a store value and in my opinion, as well Bitcoin is like the USD of the global crypto industry if you try to see in that perspective.

Now, does holding Bitcoin only would help you? Is it a wise choice/decision? Well, this is also a matter of perception but whatever I have learned, one should not put all his capital in one asset. I know there are now multiple cryptos or tokens as per the OP, floating around but out of them there are few that will make it big like Bitcoin. To find this, take nobody's help because life is uncertain and unpredictable.
There is only one thing, just research. Don't read anyone else's research as this world is manipulative.

Holding Bitcoin or any other crypto that is highly volatile for the long term might be a mistake because of liquidity issues and FOMO effect.

Liquidity issue: You require some money and want to encash Bitcoin for some fiat but the market is falling. There is a possibility that you may not find a buyer because buyers will expect it to fall more and then they will buy.

FOMO issue: Whenever the price is falling and we sell it at a lower cost than the ATH(all-time high), most of the people will have this feeling, that the price might have gone up if I could hold it for a few more months maybe.

I would like to conclude by saying, just think, and research on your own. Don't hold on to any crypto for too long unless you don't care about the capital (this is a psychology BTW) and invest in other cryptos and any other blockchain products if your research says it has potential. Trust it.

That is the issue, "if you are in it for the profits". Exploring alt coins as part of your long term holdings is still gambling and speculating that hopefully you'll hit big or significantly multiple what you've put in. Holding Bitcoin is a long term storage of wealth, and I believe Bitcoin is the only digital currency which will challenge the entire fiat monetary system altogether.

Yes there's no hate in it. But if you compare Bitcoin to other Altcoins now especially on new ones, it is safer to put your money now in Bitcoin, especially in some sort of market correction after creating a new ATH. That if price rally again leaded by BTC, risk will get lower and then that's a signal to diversify since more Altcoins will follow Bitcoin price action. That is for me, you keep your money and asset flowing so it may generate more money by value appreciating overtime.

And which is why Bitcoin remains the best and only asset/cryptocurrency suitable for long term investment, whereby it's investor could have rest of mind for fund security, unlike the rest altcoins which if you are unlucky likely to fall victim to scam project and lose all your money. Because just as we just crossed the 4th halve of Bitcoin, there is a every tendency it's price likely to skyrocket higher any moment from now, which is why this period is the best opportunity for people to accumulate as much Bitcoin as they can, because if it's price goes up, it will be difficult to accumulate as much as you will be privilege to accumulate now, as it has been predicted that the price of Bitcoin will likely hit $100k to $150k before the end of this year 2024.

Bitcoin's popularity among all the altcoins is continuously increasing due to popular demand and you also have a scenario where its price remains on top despite all ugly accusations against by its enemies including banks and other sectors that get affected when Bitcoin emerges. Of all the cryptocurrencies currently available right now, Bitcoin is the only secured investment opportunity that you could keep in your crypto wallet without worrying about any prevention to withdraw it like your ATM card or being manipulated by its creators like ETH, BNB, and any other altcoins out there.

There is risk in trading altcoins, of course, but there are potential profits attached to that risk as well and that is what most traders strive for. So even though it's true that Bitcoin contains the lowest amount of risks when it comes to making investments in this industry, diversification can be a good thing in times because a lot of altcoins tend to have a higher growth level when compared to Bitcoin. After all, their prices are way lower than it so an investment of $1m in an altcoin would make it gain a higher value compared to an investment of $1m in Bitcoin.

This is why it is always good to at least have a few altcoins in your portfolio. I don't say one should invest in a lot of altcoins because I'm also not a fan of over-diversification, but I'd say that investing in Bitcoin alone would give you profits but having a diversified portfolio can perform better in times.