The only place I think altcoins has a future in is gambling, normal gambling but first and foremost e-betting.I can not see how it will take over from normal currency's in the world of buying or selling any other goods then btc. The main reason I think this is that nobody wants to be that guy that bought two pizzas for 10000 btc 5 years from now, so i cant really see what else it has a real future in. But that is only my opinion, What do you guys think?
I think altcoins was a good token for gambling agree with that in gambling in could easily have its value and it is even use in a lot of gabling website and even in a real casino their are other currency use to play the game. But when it comes to altcoins becoming a real currency I don't think this could still be a great currency since it is just a altcoins or "alternative tokens" in the market probably for a lot of users they already have a bad experience when it comes to altcoins and even ICO's. Surely in the future a lot of altcoins in the market is going to become a dead token surely the best digital currency bitcoin will be the one that is going to be implemented in a lot of countries as a digital currency and a lot of altcoins in the market is just trash.
Thinking about this I think only popular altcoins in the market could still remain in the market since they are already implemented in the market and probably already have a demand in the market.