I believe bitcoin and banks are well renounced investment platforms but many people prefer bitcoin investment despite is very risky because of high demands and rising price interest and banks on the other hand saves millions of people finances all over the world yet their investment interest is very small but less risky than bitcoin. Which do you preferred your money to be save in as investment? Bitcoin or bank! What's your reason?
Between Bitcoin investment and banking it has its own advantages and disadvantages, but I personally choose to use both of them to diversify my investments. Because keep in mind that when you put your investment in one basket your risk of losing will be much greater. But when you diversify, your chances of losing are much smaller. Moreover, investing in Bitcoin tends to be more unstable than what is offered by banks, so investing in a bank is only for a backup investment, if you lose on a Bitcoin investment you still have other investments running in the bank.