I have left before if I felt I was the reason the team was being held back (when I was learning a dungeon) and I knew they could quickly replace me, but I told the party in advance. The only other time I would leave would be in the case of abusive speech. One round of smack is expected by immature people, but there is no reason to put up with it.

I am not going to skip out because of wipes. How can anyone learn without practice and how can anyone be expected to be perfect be without being given the chance to learn?

We had one wipe in HM Garuda last night due to a new tank learning placement. A DPS leaves. You can not refill those spots and otherwise it was a great party. That needs to be changed.