The question of how much do we have to pay to get various financial services should in theory be solved by competition. The problem is that some financial institutions are behaving like a cartel and the government is undermining competition by stepping in to save failing financial institutions.
The problem isn't that Finance is "bad" any more than energy companies are "bad" or retailers are "bad". There are people accumulating wealth in a whole bunch of industries, why is the service Google or Facebook provides more valuable than what Bank of America provides?