Hard to imagine what follows.
I've long since stopped believing in gods and the religions that come with them. Yet the physics question of energy always transforming itself into something else makes it difficult to imagine that it all ends when we die. Thus the common belief in a soul - the essence of what we are, at least energywise.
If our soul survives our physical death, what does it do next? Haunt the graveyards? Stick around to inspire the loved ones we left behind? Truly this last one is a romantic fantasy...that our spirit can look out for our children after we're gone...that we somehow still get to witness their development, the victories and failures in their lives.
I don't know. I stopped looking for answers to questions that can't be answered a long time ago. Yet every now and then I can't help but wonder.