He would stand even taller if while he was quitting Facebook, he was running in to a burning building to save a child. Of course, while saving a child is to be applauded, it lessens the value of his stance that he's not also saving 10,000 from starvation. Of course, that would be nothing next to achieving world peace while eliminating corruption in every government in the world. I'm not saying he shouldn't quit Facebook over his convictions, it's just that it would be awfully nice if he solved every global problem and then was crucified on an actual cross for doing it on the way out.