I left after only 2.5 years. I didn't even have any watershed experiences. I just eventually heeded the voice in my head that whispered "get out of here" on a regular basis.

So I left, and I didn't exactly stop hearing that voice, but at least it said "this is pathetic" instead.

It didn't shut up entirely until I moved again.

I can barely even stand to drive around Chicago on the tristate tollway now.