Well, skipping the "connection dropped, you take 3 minutes to log back in and you're out", I've got kicked a few amount of time.
I have a really bad habit of starting to act douchey when people do stupid things in a dungeon.
For example, if the tank has a really bad attitude, never bother to keep aggro and that the dps has to tank most of the fight, I'll stop healing them. If they're low lvl, I'll give some tips, but if they just outright ignore you or don't care, why should I?
Just yesterday, I was tanking amdapor NM for the 1st relic (aiming for the title atm) and I saw that the healer was propably new (around 3k hp for a healer and not even the lvl 50 torso equipped with lvl 50- jewelry).
After a first pull where I saw he was struggling, I decided to take smaller packs to make it easier. At some point, the BRD started pulling next pack to bring them to me, got tired of it and stopped taking aggro on the mob he pulled. If they aggro it, they deal with it.
Got kicked soon after this, proc an instant queue right after and cleared it in around 15 minutes so not even mad.
I know I might sound like an awful player to other people, but I can't be bothered if other people aren't bothered too, I rather get kicked and join again with a nice group than deal with unpleasant people.