Why not both!

honestly... I didn't put or both because I was lazy to think through if "one of three buckets" was the right way to phrase it, and additionally, too lazy to think of another way to phrase it, so yeah, or both. :P

Not sure how big of a minority we are, but for some of us, philanthropy does actually come from a place of deep gratitude for our community

I don’t care about the idea of community, I just want the people I interact with to suffer less. That’s what the money is for.

  > allaying guilt

We all know the mere act of being rich makes someone guilty, so that's a tautology.

I think you can make a very convincing argument ALL philanthropy falls into either category. That doesn't it make it bad either. If someone does something that helps other it doesn't really matter in the end why they did it.