bitcoin has many technological limitations(1MB size of block, takes long time to process your transaction) and so had been hardforked to bch, btg.
it could only be used as currency since they do not support platform like ethereum does.
currently many icos are based on ethereums, cause they support tokens on their platform.
I think the only benefit of using bitcoin is that it is the very first cryptocurrency and altcoins are exchangeable in exchange because of btc's stability.
how do you think of bitcoin? will it still have much advantages&value as it now has?
One advantage of bitcoin is has more investors and users than any of the present cryptocurrencies and its demand continue to rise while its supply is slowly decreasing. Bitcoin price may possibly rise more in the future if the buying for the leading virtual coin accelerates. While bitcoin has technological limitations, ethereum might also encounter some problems like platform congestion due to numerous applications particularly the newly-created games.