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?
There are many sector of altcoin project, if they're become successful in the future, this world will full of cryptocurrency and we don't to own dollar or any fiat anymore. But it's almost impossibble to happen because the country government won't let this happen because there are already many people who hold tons of cryptocurrency and they're undetectable. This will be a disaster for them if all of this world become decentralized with cryptocurrency