I'll go against the grain and speak from experience.
If you love toribash, never quit. Don't post about it, don't even think about it.
If its just a game to you, then yeah, GTFO.
I have left in various forms over the years (geez, really... years!?), and each one has been a mistake. Even leaving clans and groups seemed like a horrible mistake (until bouncy was kind enough to give me a great penthouse suite...).
Love = Never Let Go
Meh = You Are Already Gone