For me, I think the banks sucks because they tend to control everything, period!
The bitcoin is fast, secure, decentralized, gives total control and freedom to the people.
Perhaps, you had better experience with traditional banking system way better than bitcoins.

Share with us what you think? thanks

But that is the whole point, when you put your money in a bank you need to trust that the bank is going to give you back your money at some point in the future, in bitcoin you do not have to trust anyone you are your own bank, that is the main difference between banks and bitcoin.