I probably fall into this camp, as does a close friend of mine. We actually talked about it recently and she mentioned there's a significant percentage of PhDs

I probably fall into this camp, as does a close friend of mine. We actually talked about it recently and she mentioned there's a significant percentage of PhDs that don't continue into academia (something like a quarter or a half,can't remember the actual figure). It's a serious enough issue that it's been nicknamed the "PhD brain drain". Essentially, people burn out during the PhD and don't want to go back. Which is fair enough.