So long as you can fit into the economic order without stealing or vandalizing or otherwise being a nuisance, you are not a "mooch" in my book.

I think that any viable theory of "dropping out" will take market forces into account. I find that this article does some of that, though it seems to me that it doesn't go far enough. (In particular, he notes that trying to do what you love resulting in doing what you no longer love. Market forces can explain this one quite handily!)