I'm always disappointed when good posting members get a ban, I'm even more disappointed when they request a ban.
I've had those pm's, "no mate, I've had enough on here, just ban me" type stuff and after trying to talk 'em round, i've pushed the button.... Hey presto, two weeks later, or sommat like that, they are back.... And the point was..????
Nah, for me it's dead simple... If your on here, enjoy your time, contribute well. If you don't want to be on here, simply don't log on and spare folk the long drawn out bullshit about leaving....!