It's not a charity. It's a way to stay in control of all of your money and not pay taxes on it. You pay yourself and your children salaries from it. You have it contract with your profitable businesses. You get to use that money to decide what the world's ideology is. You get to use it to own a segment of science itself by being where researchers need to go if they want funding. That's what Bill Gates did with public education the last 10 years. This is how NGOs that go on to hire death squads in South America are created. And in the meantime you spend a few decimal points on a press blitz to make yourself look like a saint.