For me, whether there an afterlife or not, it changes my life very little, if at all. My purpose, if that is the right word, remains the same. I am in charge of my life, or at least responsible for my life here and now. If there is an afterlife, i believe i will be responsible over there at more or less the same proportion as i am here. Aint no jesus/devils/gods waiting at the portal to strap on the leash and lead me to judgement and escort me to my eternal home.
S