Given that not a single person here has protested against the idea of a 90% marginal tax rate, but some have expressed concerns about the funds being spent inef

Given that not a single person here has protested against the idea of a 90% marginal tax rate, but some have expressed concerns about the funds being spent inefficiently, why not impose a voluntary tax on ourselves and agree to donate to charity 90% of earnings over a certain amount? Surely there are some very good charities that do work in the area you are most interested in - e.g. homelessness, educational scholarships, poverty in general? The added bonus is that a society where people voluntarily donate 90% to charity is a much better society than the one where people get taxed. It means a lot more when something is done voluntarily, and it changes the perceptions on the side of the people receiving the help.