Ask Yourself

What aspect of self might possibly survive death?
Is it your personality?
Imagine you, your fears, your solid likes and dislikes, your habits, your predisposition towards being happy or sad or angry carrying on and on and on. You may tell yourself that given eternal life you could change those aspects that (from your present perspective) are undesirable and perfect those that strike you as being ideal, but if you couldn’t do it in 70 or 80 years with the uncertainty of death looming on the horizon, why would you bother later?
Whatever it is that you do now, that is precisely what you would do with an afterlife.
A soul?
What is that exactly? Assuming that you have one, which you may not at this point, would you be able to operate it?
Recall the difficulty involved in being inside of a physical body as an infant. You had no control, were completely disoriented, the body needed to grow and develop.
Do you assume that you will be able to develop your soul after you die? What if life is the low impact period reserved for developing a soul? What if death is not at all peaceful, but rather a high pressure, high speed whirlwind experience?
If a a naked baby were deposited in the center of, or even on the shoulder of a busy highway how do you think it would fare?
It would be unlikely to survive the experience.
Ask yourself: what might the purpose of mortal life be?
Is it to be enjoyed as long as you follow the rules so that you may go on to enjoy yet another purposeless existence? Might it be a preparatory space?
If you think that you will survive death, look to your dreams.
In your dreams, are you always the same character that you play during waking life?