I don't argue with the concept of "soul" used in the sense of "mind", that is, the sum of the consciousness and cognition of a person, but it's this immateriality that's so often connected to the idea that I object to. It seems, judging by the data collected on the subject, that consciousness and cognition have a very real material origin in the human brain. Such a "soul" is not separable at death. It decomposes with the rest of your organs, and there is nothing to suggest that consciousness or cognition can outlive the brain any more than heartbeat can outlive the heart.