The theoretical benefits of Bitcoin for the unbanked are enormous, operating as it does on a peer-to-peer volunteer computer network without the need for a third-party bank or mobile money platform. Yet, the theoretical benefits of mobile money for the unbanked are also huge; transforming that theory into practice, however, has proved to be a significantly harder nut to crack, as is well known. And in this regard cryptocurrencies have to overcome the same hurdles that mobile money does, if people in emerging markets are going to be likely to entrust their money into a volatile cryptocurrency system which, actually, very few people in more advanced economies actually understand.
Also i believe altcoins have future, its not that Bitcoin is already godlike and because it has a golden value or have very high price is that its perfect coin already, but it still has its flaws and lacks some things just like its digit in decimal place its somewhat very difficult to read for other people and some famous american citizen didn't even know what bitcoin is. That's why altcoins are created to fill the gap that bitcoin lacks.
Some altcoins are definitely created to fill a gap, to fill a need that bitcoin does not fill, for example coins like monero offer real anonymity something that bitcoin does not offer, but the examples are very limited most coins are created with a very specific purpose in mind and as such are never going to be able to compete with bitcoin and to try to replace it.
