At the same time you could argue that his decisions have affected billions of people on this planet in a negative way and the fifty million lives saved were to whitewash everything else he's done. He's not doing it out of the kindness of his heart, he did it because 1) Melinda told him she'd fuck off if he kept being such a jackass, and 2) As one of the most hated men in the world, he needed to fix his image.