Liberals donate less to charity compared to Conservatives, despite the fact that Liberals' income (on average) is higher. This is a proven fact. So, it makes sense that Liberals feeeel good when they pay higher taxes. It makes them feel like they're doing something good for others, when in reality they are not.
I am a Democrat and support many of the government programs. I am staunchly pro-life (as opposed to pro-death) and thus do not support anything dealing with government paying for abortion. But I do think the poor and elderly should be taken care of. My problem is that I have seen far too much waste in government spending most of my adult life. I know we could get by paying less in taxes but no one has ever reall tried, at least since I started paying them. I really think Clinton, despite his moral flaws, did a better job than GW Bush did in this area. I also have to say that I liked Mike Huckabee's flat tax support. I think they (the government) needs to find a way to make it work.