There are many cryptocurrencies out there, the fluctuation is wide and big. Theres a need of a coin that uses a process to stabilize its value.
No doubt that there is no other cryptocurrency or altcoin that can supersede the bitcoin. At least not for the next 5-10 years. Of course there are many rising competitors like Ethereum, ripple and litecoin.
Do you agree???
I doubt if other altcoin can replace bitcoin, because bitcoin has been the most popular altcoin for years and so it is impossible for the developers to improve a coin that will overtake bitcoin and it will take them time to do that, although ethereum is a strong coin but it is learning work where bitcoin is, so without bitcoin there will be no other altcoin standing.