It seems to me that altcoins have even a greater future than bitcoin because the only benefit of the btc in its price, the altcoins, however, are more technologically and more functional.
I do really believe that altcoin had a future because some of them are really worth it to buy and to hold. And i think it will become a more profitable someone especially ethereum, it will grow day by day. And some of them have potential to be known and become succesful.