I'm not a mod.
And yes though I wanted to become promoted. I quit because of that. Though I came back realizing that there is more to toribash then just getting power. I quit my local mod jobs because for one personal reasons. And two because toribash is becoming stressful for me so I decided to give up everything I have and just chill. I'd be hanging out in the IRC channels.
Btw, if you actually knew why people quit, you'd be ashamed of yourself.