Bitcoin will always be around. Yes, other alt coins might be used for daily usage like Litecoin, Dash, ZCash, Monero etc. Bitcoin will continue to rise in value and most likely become a store of value. Bitcoin will eventually be too expensive for the common person to own. It will be used by countries and large corporations to settle international trade accounts. Just like Gold. Not many citizens own gold now a days, but nations own gold to settle international trade. Bitcoin will be valued as if it is digital gold