When it comes to death and, dying all I know for sure is that it's going to happen to me and everyone. My body will likely be cremated or (hopefully) compressed into a diamond. If I'm just buried, I'll just rot and decay until I'm dust within a box. That's what happens to the body, organs and, physical brain of Joe-Shoggoth here.
As for my consciousness itself? That's the million dollar question now, isn't it? Here's what I think. Consciousness manifested once for each of us in who we are now so who's to say it won't manifest for us again in a different body? I look at consciousness as a user and the body as the hardware being utilized. The user moves on to a different platform but the hardware itself wouldn't know where the user has been or, where it's going?
As for my ideal Heaven though...I dunno, the option of being reborn in one of the fictional universes I've encountered in this living world? The choice of being reborn in the Marvel or, DC universe, the chance to be born as the main character in a HaRomCom anime (like Love Hina) or Hell, the being born into a porn (if you're into that kind of thing). For me it would come down to Old Republic Star Wars, DC Universe (as a Meta)...
My Hell would be being forced to sit in a movie theater surrounded by the people I met in life who I hated the most, being forced to watch with them my worst/most embarrassing memories. Once. Then I'm given a second chance at this current life with no definite memory what the Hell just happened.
For the record, I don't follow any organised religions but am open to the possibility of the existence of any number of Gods/Goddesses. If they do exist though, they don't interact with us anymore.