I am not a fan of res killing, which in days long past was done for no reason but to display nonexistent superiority. It is necessary because of insurance, however, and remember that Sacrifice restores items still on a corpse.Having said that, I tend to accept getting pk'd philosophically, but rezkills annoy me a bit. I usually give up and leave if that's the way it's going to be.
The days I most fondly remember are those when the raiders have rezed us and then stayed to help us work the spawn and share the rewards equally. - mostly those were folk on mine or my hubby's icq lists though who killed us for a laugh
A couple of days ago I came across an old killshot. Someone had cheap-shotted me in a dungeon while I was fighting monsters. I ran off to a quiet corner and ressed myself, surprised he hadn't yet taken my bandages and potions. It was no problem to go back and kill the chump.