I never viewed it as a good idea. I think people should RP as if death was a no-return thing like real life. So if your character likes someone, they most likely wouldn't do that.
My char wouldn't care he is a top kek, super edgy, super kool, duel wielding katana master who has no emotions and kills all he wants as a master of stealth also having two seperatly colored eyes.
Death should be RP'd as a if it would be a perma death. Though there are situations where someone would be under so much fear and stress they'd willing to kill their friend/child, but it shouldn't be because you know they'll just revive.