I do because of the scientific theory "Energy can not be created nor destroyed" and our souls are energy. That makes me think of life after death.
and how do we explain ghosts and spirits ? their energy and people have constantly had experiences with them. I think that
the 'light' we see during death is the light we see coming out of our new mothers womb. I really do believe in reincarnation and think that in the future more people will too (: