Self-sacrifice is a personal choice for a Human in a free society. In you original question you say 'Lives' implying more than one. If all lives are considered equal, then it becomes a basic mathematical formula: 'myself' < 'Lives' This is also known as 'altruism'. An excellent book and thesis on Altruism is 'The Selfish Gene' by Richard Dawkins, where he makes the case that evolution has mammals wired genetically for self-sacrifice in the name of the many. 

That said: No, you would be able to enjoy your party post-death... But the people you saved would, and if we automatically assign a value of '1' to each party participant, mathematics dictates it would be a better party without you. However this assumes equal value of all individuals whereas in reality assigning humans mathematical values is difficult, particularly when the actions of an individual such as self-sacrifice are near priceless.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence