If I'm at a birthday party and we're only getting cake crumbs and someone comes by and offers me a slice, then yeah it's nice for me, but how can they afford to just be giving away cake at a crumb party? It's not just charity, it's inequality and people with more money want credit parting with the surplus they've accumulated.

I'm not even talking about millionaires. They're down here with the rest of us as far as I'm concerned. You can earn millions by directly working for it.

But anyway when I give money to the local animal rescue, it stings a bit, because that's money out of my pocket that I would have otherwise spent. And I'm well off compared to most.

A billionaire is so far beyond that you may as well not even call it "money" for them, because it's so different then what you or I associate with the term. Their lifestyle will never be at risk of having to change because they spent too much.

They have insane, unethical, embarrassing, pernicious, criminal amounts of available capital.

Sure, you can be happy that they donated money to a cause. But billionaires are the reason donations and philanthropy are necessary in the first place. You don't become a billionaire unless you're doing unethical shit and/or exploiting a lot of people (there's inheritance, but that's another problematic topic altogether).