brtamigo, No offense but that is the stupidest question ever asked in Sajha. The first thing is the answer should come naturally to you before you ask the question. It's like asking "oh I am hungry, should I eat?". Oh yes, You should eat, you must eat unless you wanna starve to death. It's about choice, either you wanna do it, or you don't wanna do it... If you wanna mourn, go ahead and do it. If you don't wanna mourn, find a way to avoid it without making an ass out of yourself. For the further information, refer to Moral Philosophies, Moral Studies or ethics from FOURTH grade in the school where they teach few MINOR things about morality... Thanks.