If intend to invest for short term, maybe altcoin can reach a pretty good profit, because volatility still higher. However, if used to be bitcoin holder. Maybe less interested in alt. For me, utilizing both will make investment grow fast.
I believe that people who are attracted to the cryptocurrency, first of all get acquainted with bitcoin and Ethereum. And some more coins that are mined through mining. And then they get acquainted with others and understand that there are a million opportunities. This is me to the fact that the first wave always goes to the more famous tokens, and then spreads evenly across the market.