I'm still not sure I get Kottke's full time blogging decision. The odds of succeeding, and if doing so if still having fun while doing it, seem slim, but obviously his reasoning is pure bait for people like me as well:
I'm interested in too many things to settle on design or programming or writing or a particular topic. kottke.org indulges my desire to be interested in too many things (as Neal Stephenson put it recently).
(That Stephenson interview looks like it might be fun by the way, once you subtract libertarian "easy reasoning from principles")