as long as they are doing it AT THE END of the round when no other enemy has a chance to kill them? Then it's fine. I do it all the time, but i never deny the enemy the chance to get xp but if no more enemies alive? Go for it. In fact, u lose all ur items in the process and any armor, not to mention that it DOES count towards ur killdeathratio (kdr) ... So there is a tradeoff and when there's a tradeoff, there is balance and fairness.