No one can be sure what will happen in the future to the world of cryptocurrencies, bitcoin is often chosen by many people but it is less profitable and certainly there are no reputable altcoins but its profits are extremely "greater the risk, the higher the profit" is important towards how much profit target you set. In addition, you can also choose altcoin as a short-term investment method, I believe in the future altcoins will grow again as it used to.