Yes
Recently, after returning from Iraq, I was rather desperately looking for a group to join, thinking I would be happy with just about anything. Joined a group (of all adults, mind you) and started to be put off by "immature-mature gaming." (Players offering sexual favors to NPCs to drop prices of magic items and such....) Also, the DM, the youngest person in the group, was relatively immature and inexperienced. He has (had) potential, but had a really weak story with LARGE amounts of railroading. He loved for everything to be "mysterious" so that even if you made an insanely high Spellcraft or Knowledge (ANYTHING) check, you still had no idea what is could be. (He had a House Rule that if you rolled a 20 on a skill check, you started added bonuses to 30, not 20. I got a mid-40s result, as a mage, on Knowledge (Arcana) and agian on Knowledge (Planes) and still had no idea about a magical effect that happened.) As a result of all this, I got a bit dismayed about the game in general, and became stand-offish IC and slightly arguementative and derisive OOC. At the end of a session he asked opinions on what he could do better as a DM, being new and all. I told him to relax a bit, and stop relying on his computer so much, since it was slowing down the game, and that less railroading would be nice. I wanted to try and keep playing (even though it was a bad group) until I could find a better group, but the next day I received an email stating our play styles were to different and suggesting (not foricing) I find a different group. I bowed out at that point.
Now, another game, I got a bit of a "send-off," though it was mutually understood. We were playing in an evil-campaign that was actually working (at first). Then my character started being talked down to and looked down on by another character (it was actually a problem the other player had with me, that started to spill into the game). My character began plotting his betrayel, and when the lines were drawn it was me, my cohort, a "hired-gun" and one NPC against the rest of the party, seven people. (This actually reached this point on purpose because I was leaving for basic training, or else it might have gone down differently, with people dieing in thier sleep.) When everything was said and done, my character, being an uber-mage, walked away alive, with half the other guys dead, the others badly beaten. It was a fun send off, with no hard feelings.