The 2008 rescue package was designed by the banks themselves, safe in the knowledge that the Politicians would get the public to bail them out. They'd have been better off paying everyones mortgage off to refinance the banks. Like you say, they've just kicked the can down the road.
Interest rates are already hovering around 2% - zero, and are even negative in some Countries. QE is the only stimulus they have available when the next crash comes. I saw that car loan delinquencies in the US has hit 8% (something similar to housing delinquencies just before the 2008 crash). Student loan delinquencies are at 11%! It's a matter of time.