The Bitcoin and money, both are just "conventions". As it was also when the salt began to replace barter.
Keep money is expensive and uncertain.
Money loses value each day (inflation).
The transfer of money is very expensive (to maintain an inefficient financial system) and extremely slow
Despite that, people take the money, because it accepts this convention.
The Bitcoin is not money.
It's better than money.
Bitcoin is worth because people are beginning to accept this convention
Bitcoin is not a problem .... Bitcoin is the solution
Pd: the train left the station recently ... board the train