Combination of a couple things.
MINOR:
* lack of upward mobility without going into administration
* lack of geographical mobility without without a pay decrease
MAJOR:
* I've noticed that people in my field, regardless of location, that don't go into administration tend to start burning out by 35.
* I've seen the end result of burnout, and don't want that.
* The jobs I've gotten, and the places I've seen/considered, about half the people are cool, and the other half seem to have a ton of mental health issues they don't bother working out. Go figure.
THE STRAW:
* A clerical issue with one of my secondary licenses that's causing me issues. Probably nothing serious, and I honestly could just drop the license and have no changes, but it brought everything else to light.
Plus, I've always enjoyed tech stuff.