It's like you're allergic to subtlety. Yes, saving untold numbers of children from malaria is a good thing. You can do bad things and good things and while everyone else is arguing about morality, the thing that matters is the end effect. Did Bill Gate's time on earth result in a better world when he's gone or a worse one? I won't pretend to know enough about his life to answer that, but he has prevented a lot of really, really brutal suffering.
Nope. I'm not weighing "good deeds" that amount to his entertainment against the aggressive selfish business destroying greed that got him the money to spend and everything else he's clearly done in his personal life, shrugging my shoulders, and saying "who knows! maybe him doing all this is all for the best"
I'd rather have better men had that money to spend and his victims both personal and business leave him penniless and alone at the end.