I do have a problem with the Gates and the Buffets. I have a problem with them because I would like to live in a world that does not encourage or celebrate the immense amassment of wealth in the hands of a few individuals. The fact that they have been so successful in gathering so much for themselves points to a rather large failure of what I would consider proper taxation. That some of them now feel like they want to give away some of that wealth to pet causes is perhaps preferable to them deciding on larger expenditures on luxuries for themselves, but in no  way mitigates the problem of their amassment of resources in the first place. Jerome's argument about feudalism is right on here.