I chose academics because I have always liked interacting and teaching. Even as a medical student I would teach my intern things they didn't know (and vice-versa). Once I got into residency, I really found I had a knack to teach (atleast one on one, and later on, in lectures), and I always liked it. When I applied for jobs, I applied for both academic and community, mainly because the DC area is a tough area to get jobs. Ended up picking up the academic one, because I really just want to stay involved and "give back," I suppose.
That being said, my job is the second highest paying in the DC area. So its not hte traditional academic pay. But we are a new program and will probably never be a "resident-run" program, so its a different flavor.
As for the burnout in academic, I dont' know the answer, but there are a LOT of dinosaurs out there! (BKN is but a coelocanth).
Q