I completely agree that hobbies are largely beneficial to the mental health of founders. I have several, and they help keep me sane.<p>On a side note, how much money does this guy HAVE? I mean, 'scuba diving with sharks'? 'Spelunking in New Zealand'?? 'Riding sheep at a rodeo'?!<p>My hobbies include things like crossword puzzles, tennis, frisbee, piano, and knitting. They are great for the startup budget. Also, video games.