Shane, several reasons I do no "professional" (= paid for) Poser work:

1. The figure meshes available are not up to the standards I need.

2). My health is not the best so I'm very picky on what I spend my time on. Rigging for myself (Like V3WM and D3WM) and then just sharing the result is fun. Working in a team and being hold to deadlines is work.

3. No adequate pay. (Most even think it should be done "for the honor")

On a lighter note:

I wouldn't wish it on anyone

Yeah, pretty much sums it up, eh?