I like your thinking. But I ask you this: is there really a necessary connection between ‘believing in God’ (or not) and the concept of the existence of an ‘afterlife’ - heaven, hell, or something else (or not)? Could the idea of God and the idea of afterlife be unrelated?
Here are some permutations:
I believe in God, and in an afterlife
I believe in God, but not in an afterlife
I do not believe in God, but I do believe in an afterlife
I do not believe in God, nor do I believe in an afterlife
An additional question for you: what is an afterlife?
I think most people see it as at least a new kind of ‘space’ where one is aware of themselves and their surroundings, and continues to have experiences ‘there.’
Other ideas, such as reincarnation (coming back to life as a newborn person or other creature), or a return of one’s soul ‘back’ to ‘where souls come from’ (a kind of clearing house for possible for later re-issue) – do not seem to require continued awareness of who you are now.
Last question: what is a soul?
For me, everyone and every living thing (and maybe non-living things) seem to have a soul. Although I do not have a good definition for ‘soul,’ I do feel that souls exist. Something does seem to exit the body when someone dies, does it not?
Possible conclusion: God, though ‘real,’ is kind of an illusion, in that It is really just our individual and/or collective awareness of the existence of souls – our own, and those of others – both living, and in our memories.
Maybe God and Afterlife are just constructs of ‘soul-awareness,’ and not Things unto Themselves.
What do you think of all that? And the rest?