[Avoy]

The one unique thing about living for God, as opposed for oneself, is that you end on a path that helps others. But this is the case for the majority of religions. It also makes decision making easier because you're doing "what's right." Again, for the benefit of others. Which, in turn, actually makes you feel good... like you're doing something positive with your life. But one thing I learned in life: good feelings, good will and gratitude are transitory and often never reciprocated. I think only saintly people are cool with that in the long-term.