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?
Investment in banks has less risk but investment in Bitcoin has more risk. But banks pay 5-10% interest every year but Bitcoin is able to pay several times profit every year. On the other hand, if you keep money in the bank, the principal amount remains as stable. But if you invest in Bitcoin, its price may drop a lot and thus there may be high loss but there is no loss in case of banks. So if you can afford to take risk then you can invest in bitcoin but if you want risk free investment then bank is safe for you. So it depends on you