Earlier quoted context omitted.
I don't know man. Doesn't that sound a little bit suspicious? If you were to create Google why would you just peace out? Look at Bill Gates. He still wants to do things but the google founders are all MIA. How do guys like that just lose all ambition and disappear?
If I had created Google I would have peaced out looooong ago. Sure, I wouldn't disappear completely, but I'd work on low-stress things where I have a lot of free time and don't have so much responsibility under me.
Or children ;) John Lennon famously quit music for 5 years to raise his second child, after failing his first marriage.