Perhaps it is not right to disparage all alt-coins. Some alt-coins make you a lot of profit. As Bitcoin is the best cryptocurrency, comparing alt-coins with Bitcoin is not fair. Decentralization system is it's main basis.If you want to get more profit from bitcoin, you have to invest and hold for long term.
In fact, it is not worth comparing Bitcoin with altcoins, because our main goal in holding crypto is to make a profit. You are right, some potential altcoins can also provide maximum profits and can even be more than Bitcoin. It just depends on how much we have invested. If there are a lot of them, that can certainly happen. Indeed, the risk is also considered that Bitcoin, with a very small risk compared to the altcoins that we know, is still suddenly worthless.
Yes, I agree that if you want to get maximum results, then keep Bitcoin in the long term. It will definitely come true.