But here is the rub, what if the Government spends the money you gave them on an all expense paid trip for themselves to Las Vegas where they ran up big bills at strip clubs and on luxury suites? How do you feel about that?
How about the Greek people, their economy in flames, their country ruined, where "not paying taxes is a national pastime" according to The Economist.
The insight you are missing is that when "your" opinion of the government's fiscal policy is destroyed by abuse, "you" feel completely justified in exploiting all the legal ways to not give them any more money than you have to.
It is hard for an individual to fix government it is easy for an individual to minimize their tax burden. So people take the easy way out.