I love the part about "I like parrots, but if you have me over, don't go out and buy a parrot!"
And I wouldn't consider switching to free software only. However, it's the idea that I'm attracted to -- making a contribution, making the world a better place without it costing you an arm, leg, your privacy, all your cash, your data, your credit cards, etc. (Apple, Google, Facebook, Microsoft -- corporate computing in general). The best someone like Steve Jobs could do was take a 30% cut and tell you to be grateful you're allowed to even make an app. No one's perfect, but at least Mr. Gates uses his wealth to help humans.