Fears & Thoughts About Death - Clarified

In a recent moment of clarify, my son was able to enunciate and itemize his fears and thoughts in a very specific manner:

1. He is afraid of dying and does not want to die.  He wants to live forever.
2. He is afraid of dying because he does not want to go to Heaven.  He doesn't like Heaven and doesn't think it's a good place.
3. He is afraid of dying because he doesn't want to be alone.  Specifically, he does not want to be buried and left all by himself in a cemetery.

Because of the concrete nature of his thought process, the specifics of the concerns cannot be addressed philosphically.  Answers must be black or white and irrefutable.  I have tried these answers with limited or no success:

1. You can live as long as you want - you just have to take care of yourself.  That's what the Ray Kurzweil book is all about.
2. If you live as long as you want, you don't need to worry about heaven.
3. If you live as long as you want, you'll never be alone.