I am positive about altcoin future. As soon as people see big profits on Bitcoin, they will realize that Bitcoin is too expensive and they will find a new way how to get a profit. And they find out altcoins, that are still hugely undervalued.

I completely agree with you. the prospects for the altcoin market in the next few years are very high and sooner or later we will get our big profit
Do not forget that you need to choose the right coins, and correctly enter and exit the coin, as many coins showed very strong growth in 2017, but most of them will no longer reach those values.