In his video with Doris, Buffett says that even before he became wealthy, he and his wife Susie agreed that almost all the money he made—and he thought he would make a lot—would go to society.
Initially, he postponed giving. "I thought I would compound a fund at a high rate, and therefore if I gave away all my money when I had a million dollars it would deprive the world of many billions later on."
Now, he says, "every share of Berkshire Hathaway I have will go back to society, and it doesn't cost me a thing. I get to do what I love doing every day, and I get to have everything I want."
(Buffett owns 336,000 Class A Berkshire shares with a market value of over $59 billion. That's after eight annual stock gifts to the Gates Foundation alone that would be worth $19.4 billion at its current price.)
What he loves doing, of course, is running Berkshire Hathaway. And he has no interest in managing a foundation. "I wouldn't be effective, as I wouldn't like doing it so much," he says.
That's why he's distributing his billions through foundations run by his friend Bill Gates, Doris, and his three children, Howard, Susan and Peter.
Buffett's secret: "Figure out what you're good at and play that game. You don't have to be good at everything."