Well, banks used to solve some problems (holding deposits, lending money for interest) and create some too (fractional reserve tax). The thing is this old concept of banking should end. It's inefficient and unfair. Banks will give you interest like 0.5% a year on your deposited money, while they will lend it to someone else on 10% or more. Of course they will lend more than they have so inflation will hit your savings as well. Sadly, storing money in banks is almost mandatory in most countries in the world.

There is a place for more transparent banking build on top of blockchain where no fractional reserve is possible.