you know what the best thing of this all is? there is absolutely no need to choose between these two options since you can use both at the same time without any problems.
But everyone know that with banks we are facing a lot of problems there are much more limitations with the usage of banks while with bitcoin there are no or much less limitations so I will want to go for only bitcoins.
Can you explain what problems you are facing when using your bank? I honestly don't experience any problems. I am not paying any transaction fees, I can withdraw my money at any time, my bank card with NFC offers me a way to complete transactions very quickly. It's not at all bad.
I have few problems in bank either, when I try to withdraw my money with their atm. Sometimes the atm doesn't enough fund for withdrawing, I don't know if everytime it happens it is exact to me or that is just happening in coincidence. But for their service in over-the-counter transactions I'm having no problem at all.
not sure from which countries you guys are coming, but here in the netherlands i don't have any problems with atm's at all. the only error i once have seen in the news, was that atm's were giving out much more money than people were initially withdrawing.