Well, first, he's a got ton of really interesting and crazy experiences, and translates into it practical knowledge... second, he goes on writing tears every now and then and cranks out a lot of quality content, then gets quieter for a while.

I actually dislike him on a personal level and think he's a jerk, and disagree with many of his philosophical stances, but despite that it's hard not to respect the guy and his writings and desire to give back / share his knowledge.