I don't understand the "it's half my monies!" people. If the tax rate were lower, their pretax income would just be decreased and the employer would get a windfall. The fact that 10%, 50%, or 90% of a paycheck goes to income taxes is irrelevant (I mean the percentage in and of itself, all other factors remaining equal, is irrelevant) because at the end of the day a worker is paid for the value of his labor. And the value of labor doesn't magically increase if the tax rate goes down.
I guess it's just a psychological issue, seeing a certain amount of taxes come out of a paycheck. I only wish people would understand that the fact of taxation is taken into account when negotiating an employment contract.