This amount of taxes is pretty low.
In Germany, you can expect various taxes (including insurance, and other social services such as unemployment and invalidity payments), for a (well) decent salary of about 3000 euros/month (about $4000 I guess), to amount to between 30 and 40%! (you do the math).
I guess the quality of state services is related to how much taxes people pay, which brings me to...
Nabs wrote@Bashlogic, the answer in details is huge, but I can tell you one simple quick answer: you get absolutely nothing in return for your taxes.
Well, if you don't get caught, paying taxes and not paying taxes is not going to make any difference. Yet, where do you suppose the money used to build road and to fund firefighters (etc.) comes from?