The thing that (I think) is going to be the big difference-maker for me is how well I can handle/ignore the PG/customer service nonsense and the abusive "customer" base once I get out versus how much I enjoy my time away from work. I'd like to think that I can take punishment for 8 hours a day, 4 days a week, if I take home enough coin and can be truly happy with my home life.
Once you start "living at your job", then its lookout-city.