The reason that you are not getting interest on your bank account is because the banks don't want your money when they can get it from the federal reserves at cheap rates.
The federal reserves in 08 wanted consumers and business to spend money instead of keeping it in savings to spur the economy. (Let's not forget ~70% of GDP is consumer spending) Some will argue it has worked, others will argue it hasn't worked.
Snapchat is an example of an unintended consequences of very low interest rates.
