Given we turn to dust, smoke and worm fodder there is a remote chance we will be reincorporated in some other living organism from bacteria to plants to herbivores to carnivores and humans, but only by being "eaten".
The afterlife concept often cheapens our real lives (see suicide bombers). Does the cancer remission patient say "..its ok ill be in heaven shortly", or do they say "live every minute as if it is your last?"
However, I do actually believe in a semiphysical metaphoric after life, where I am part of the living beyond death yet not conscious of it. So what the hell am I talking about. It goes something like this.
I am the manifestation of my DNA, my sentience is a product of the complexity of my biological self. I am aware of the Universe and many of its wonders. My perception is governed by my genetics, biology and the physical environment, the culture and family I was brought up in, and the books I have read.
My current pleasant life is due to the hard work and thinking of my father and his father before him. I share half my DNA with my father and half with my mother, there is a bit of them always in me. Like wise, my children carry half my DNA. I may die and turn to dust, but half of me is literally carried beyond death through my children, I may therefore be considered "still there" in that sense, however my consciousness died with my original unique body. Although my children's consciousness may have been influenced by my teachings to them when I was alive.
If I treat my children well, safe home, good education, lots of love and support. Then their chances of leading a happy successful life are improved. Because I am part of them they have become my "Heaven". On the other hand if I treat my children with disrespect, treating them poorly, with physical and emotional violence, or desert or abuse them, then I am making their future pretty bleak, hence my "Hell" because I will in part, be there with them.
This is my way of replacing the religious concepts of death, afterlife, heaven and hell into a secular perspective.
Cheeers