You can. There's this idea that extremely wealthy people aren't happy, or that money doesn't necessarily "buy" happiness, but that's not entirely true. I know some people who have obscene money and they're pretty damn happy every time I see them. lol. I think those people who squander away their lottery winnings and end up miserable are a misrepresentation of that idea. Those people are just dumb and/or should have sought some financial counseling at some point.
The dude in the OP though, he doesn't seem to need the money to be happy.
And good for him. I don't need it either, but it sure affords me the luxury of doing stuff I wouldn't otherwise be able to do.
And that makes me happy.