Aineo, I have thought a lot about what you have presented. And it could be very troubling to a lot of Christians.
and then I remembered the words spoken by our Lord so many years ago:
"Do not let your hearts be troubled. Trust in God; trust also in me. In my Father's house are man rooms; if it were not so, I would have told you. I am going there to prepare a place for you. And if I go and prepare a place for you, I will come back and take you to be with me that you also may be where I am."
John 14:1-3
And so wherever He is, I know I will be with Him. And that is enough. Personally I have no doubts about the soul and spirit being eternal, but in the long run, it is only Jesus that matters, and being with Him.
And that is something I know.