We can see these days that not all people know cryptocurrencies, if they do perhaps they have heard only about bitcoin, but without owning or having the experience of making any transactions.
Maybe altcoins will become popular within 3 years from now?
I am sure that next year's altcoin will become popular, because now many people have conducted seminars to introduce cryptocurrency in several cities,
so that makes a lot of people know about cryptocurrency, then that makes people not only know about Bitcoin, but they also know about altcoin, so that makes altcoins become popular and I'm sure that the price of cryptocurrency will slowly increase.