Well, it would be nice be able to reduce taxes to 20% for everyone, however that simply isn't likely to happen soon. Heck, I pay about 33% of my salary in taxes, and I'm quite middle class. If a flat tax were implemented, I imagine everyone would be paying somewhere around 45% of his salary in taxes. This is a very large drop in income for most Americans. If we simply implemented the flat tax without cutting anything from the government budget, most Americans would see a huge decrease in their standard of living.

Now it's easy to say, "Then let's cut things from the budget", and it would be nice if it were that simple; I do support budget cuts where they make sense. But even if we cut the budget down to almost nothing, it still makes sense to have the wealthy pay more in taxes.

The concepts of property and capitalism provide lots of money to certain people. But these wealthy people are no more deserving of wealth than anyone else. They aren't smarter, more kind, more generous, or harder workers. They are simply the people who are in a lucky position to benefit from our economic system. Why have we chosen such an economic system? Well, it's because if we had a different system, people wouldn't have incentive to produce anything, and we'd fall apart economically.

So I don't think it's a bad thing to even out the inequality of capitalism by taxing the wealthy more, so long as we keep the economy in mind.