I can't answer the question for OP, but for me it would be

* Pursuing my own goals

* Working directly on something which benefits me

* A lot less boring than sitting in the office all day

* Not sitting in an office at all

* Nature

* Real satisfaction from accomplishment

* Don't have to when I don't want, i.e. I have to deal with the consequences (e.g. no food) but nobody can make me responsible for this and fire me

* No commute through crowded cities

* No recycled, AC'd air

* Did I mention not sitting in an office?

I think I have to stop now or I get even more depressed than I already am.