Already 10 years have passed and we can see that cryptos are doing well most especially bitcoin. As long as bitcoin is still alive and kicking, expect that the rest of the good coins are likely to perform well. I don't think there are other coins out there that are much more profitable than bitcoin. Those who promised that are obviously a scam. There are those who can pump in a short period of time but they don't last long. Btc is still profitable in the long run because it has a longer life span.

Isn't btc already in the mainstream? It was adopted on so many countries and there are now countries that made btc a legal tender. The rest will have no choice but to follow this trend soon or else they will get left behind.