An afterlife is a different issue. There are lots of different "afterlives", one of which is as Zyklop has pointed out, "the living through your progeny" kind. It may be argued that the matter never really perishes but merely changes form, so there must be some sort of an afterlife. If nothing we all know that sooner or later almost all the dead people (unless cremated, I assume) become fertilizer for the plants. Living your next life as chlorophyll cells.. That's a possibility. Although I'm sure it wouldn't appeal to most people who'd rather have the aforementioned virgins around.
