The fact that people try to avoid paying taxes does not mean that we should never charge them.
Also in recent decades the most successful tax avoidance system has been the systemic pressure from Grover Norquist and allies to reduce taxes at every opportunity and never, ever, let them come back up. We're now at historically low tax rates with a broken budget. Raising taxes can't solve the underlying fiscal problems by itself. But a refusal to do so does make them impossible to solve. (At least without a dramatic restructuring of our country that most would not like.)
Also in recent decades the most successful tax avoidance system has been the systemic pressure from Grover Norquist and allies to reduce taxes at every opportunity and never, ever, let them come back up. We're now at historically low tax rates with a broken budget. Raising taxes can't solve the underlying fiscal problems by itself. But a refusal to do so does make them impossible to solve. (At least without a dramatic restructuring of our country that most would not like.)