If taxes--as opposed to user fees--are so great, why do they have to be compelled by the threat of imprisonment? If enough people were happy with government programs, they would pay for them voluntarily. Like many other posters on this board, I contribute to charitable causes, and would have a lot more to contribute in the absence of government inefficiencies and boondoggles.
I think it's more just that a lot of people don't think about the fact that their tax money actually goes somewhere rather than simply getting sucked up in a governmental vacuum. It's not that they're consciously disapproving of government programs.
Some people probably evade taxes for your given reason, but I would bet that the majority doesn't.
