>ragequitting in-game
I don't usually ragequit. Actually, I can't recall when was the last time I did it.
Sometimes, when I get beaten by shit players in Random Matchup I do. I mean, it's full of players that aren't even worth battling, so I don't put thought to that kind of battles. Most of the time, I beat them just with pressing A without looking at the DS, but sometimes shit happens and I lose, and I don't think it's worth getting a lose like that, just like how I turn the DS off instead of saving when I beat a shit player who uses an in-game teams.
The only time I ragequit legit battles are when it's the 5th time in a row or something that I fight the same Cress-Hitmontop-Tyranitar-Kami-Metagross/Heatran-Hydreigon/Latios/Salamence/Garchomp team full of perfect shinies. It's even worse than the OU rain teams. And sometimes I ragequit when I get Sand Veil haxed, but not against Snow Cloak because it's actually harder and more risky to pull off.
But as I said, I hardly ever do it.