Bitcoin and blockchain is not hereby created to eliminate banks. It have been originated into the idealization of having another mode of payment through digital currency and to make traditional way of transaction to get even faster. There must not be a competition or comparison in between those two for they are playing their roles depending on the needs and wants of the people availing for the service and benefits they can provide. Indeed it is a fact that people works on Bitcoin and gets into bank to withdraw money for they see Bitcoin as an alternative way to source out possible income that can be converted to fiat. People do have their own reasons on why they get into using and purchasing Bitcoin which might be for the sake of money, investment or even trading but that all falls for the idea of having something you can use for payment and transactions.