The last straw that got me out of mobile was working at a place with bad engineering discipline (or more precisely, bad management of engineering discipline). They were either paranoid or just didn't trust the team, and every time there was a blip in traffic someone in management would ride the engineers until they could prove it was on the other end. It almost always was. When I later saw the "stack trace or GTFO" comic I had a pretty clear idea what the author was feeling.

Eventually they rearranged the cube walls so management had to get more exercise to come harass the team. Yes, it was better use of space and the windows (in part due to my input), but that's not why the 2 people who started disassembling the cubes were doing it. "Fit of pique" is a phrase I don't get to use as often as I like, but that's what it was, whether cooler heads legitimized it or not.

Oddly, someone tried to blame my failure to convert to FTE on my interactions with one of those two engineers. He was all bark and not that much bite though. I could already handle him almost as well as anybody else and I was the new guy. No, they were trying to get everyone pagers and if that same kind of interaction happened at 2 am, I was gonna say something that got me fired. Found a much better offer and I stayed at the next place for 5 years, working on a surprising array of things and nobody ever said the p-word to me since.