Gamine
Yes, I would. I always do. I have a do-gooder compulsion, I honestly can't help it.
Whenever someone asks me to help them train for a bit, or finish a quest, or kill some monsters, I can rarely ever say no.
I have a similar problem. I hear it referred to as a "Hero Complex," haha.
The need to save others... or something...
I'll definitely be a healer and a fighter (mostly a fighter), but I'll only kill the enemy if I know absolutely for certain that they need help. I don't want anybody bitching that I'm a KS'er.