What drives Max Levchin

GigaOM: In His Own Words: Max Levchin
Levchin on what motivates him:

At any given moment what makes me tick is some combination of desperate desire to remain relevant, the make things that people care about, probably some very strong competitive streak, where if I see a friend or a competitor or someone I know making something awesome, I look myself in the mirror and I ask myself ‘why I am I not making that? Or why am I not making something even more awesome?’ … But a lot of times I just want to have fun, so I wake up and try to do fun things.

Hey co-created Paypal and sold it. His most recent company, Slide, was bought by Google for $200 million.
Some people wonder why guys like this keep working.
There’s your answer.