Your grandmother dies, your mother dies. They are forgotten. Their essence ceases to be. And you die, and you're forgotten. Everything you've done, everything you've thought, everything you've lived for and everything you've loved is forgotten, eventually, according to your belief system.
IOW, there is no point to your life unless the point is living for the moment -- sex, drugs and rock and roll. Of course, then one wonders why you are arguing religion on Free Republic.