They did not create bitcoin out of anger; it was just that sometimes we need to use new technologies, and that is why our mentor Satoshi Nakamoto came up with this technology, which is bitcoin. Other cryptocurrencies now follow in the footsteps of bitcoin. It was created to give us financial freedom by giving us access to our funds without any third-party fees.
How do you know? So his love for fellow men. Sounds like a fairy tale.
According to info on the net (Highly doubtful in the 1st place) Banking was the reason. Where do you live?
The country I live in, the countries I lived in all had different hurdles.
Good reason as any to create a difference, together with the Whitepaper's main purpose being P2P leads to the conclusion,
Rather than the reason being created by banks.