PG wrote a good post on this topic (a counterpoint I would argue). Unfortunately I can't find it. But it's about why selling your company makes sense -- why you should give it to people who are optimzied for running a business. Or something to that effect. Probably worth rereading if I could find it.
I think this may be the one you mean: http://paulgraham.com/prcmc.html
If so, maybe you want to update the link.