The problem is, that most people don't know what they are buying into. There are a few altcoins that are totally different and technological advanced - like TRON, EOS, STEEM - and a shitload of coins that do nothing else but telling people that you can pay with them - which btw no one does anyway. Even worse, some of them still function with the outdated PoW protocol and I see no future for them on the long run. They are totally valueless and will die soon. Unfortunately with them all these people who fell for their marketing claims will be burned out and broke - making them hostile against blockchain technology on the long run.