Do banks exchange bitcoins to traditional currencies If someone was not concerned with the anonymity aspect of bitcoin, can he/she exchange traditional currencies to bitcoins and vice versa from banks? Do banks do this? and if not, why?
This is something that has not arrived yet (to my knowledge), but will probably emerge in the future.

We're getting close, e.g. the German Fidor Bank has a partnership with Bitcoin.de that let's you quickly transfer money to said market place, as well as having a partnership with Ripple; Ripple has signed up a large number of banks as customers, if current news reports are accurate; finally, multiple banks and the NYSE are investors in Coinbase.

There are numerous other such relationships of which almost certainly one will eventually come to fruition in this regard.