I actually find it kind of sad that these
old rich guys are basically still pursuing a kind of child's dream, one which adulthood should have tempered a bit because, well, actually, it won't be all that much fun. Various extreme activities here on Earth (or underwater) have a lot more bang for the effort (and money, of course, but that isn't an issue for them), if that's your thing.
Call me, MacKenzie, I am a very deserving charitable endeavor.