> I'm sure many billionares are only doing it for the PR - but if they want to give away $4B for good PR then isn't that a still a benefit to society?

I'm not sure. Growing up, I'm only occupied by achieving "success" and it was the only thing that mattered. "I'll help people when I'm a billionaire" is what I used to tell myself for years. I distinctly remember a few people who could have really used a friend, but I didn't have time for them.

I could've been a better person growing up and I blame part of my "assholeness" on the glorification of billionaires.