Myself and most all my coworkers are on 40%, and obviously tax evasion is not on anyone's mind. I think it comes down to your social environment and values.
If I were born and raised in the US, with all that anti-government and anti-tax rhetoric around me, I might feel similarly to the impassioned gentleman or lady above. Yet as it stands I am happy to pay for taxes as I see great value in them, and I would generally be happy for a tax rise if justified and needed.