Iconic Philosopher of 20th Century
But in the present state of psychology and physiology, belief in immortality can, at any rate, claim no support from science, and such arguments as are possible on the subject point to the probable extinction of personality at death.
Because [humans] are able to think about our future, have long memories, and form deep bonds of affection with our comrades and family members, facing the fact of death is more difficult than for [other animals]. Nearly all of us fear death. But because our culture is permeated by a religiously grounded belief in an afterlife, loss of faith in God raises the question of death in a different and more anxious way than would be the case if religion had never offered the hope of eternal survival.
I think I have presented a fairly accurate representation of the evidence on both sides of this issue, and in weighing that evidence the scales are clearly tipped in favor of extinction.