Those who think that consciousness can exist without a living brain: What do you propose the "day to day" experience of "afterlife" to be?
After you become aware that your consciousness is detached from a body, what is it like? Is it fun? Do you have emotions? Based on what? How would it be possible to decide if you were happy or sad? Since you are in an eternal state, what would be the point of an emotion? Do you interact with other consciousnesses? Since nobody has a body, how do you tell if there is anyone else around? Or are you always alone? Do you pray? Do you interact with living beings on Earth? How does that work? Does the living being need to believe in you? What if they've "moved on" and forgotten about you? What happens after a couple hundred Earth years and anyone who ever knew you existed is gone? Is there a "clubhouse" at which a bunch of consciousnesses can get together and socialize? But how much fun could such a club be? No music, no dancing, no food, no entertainment, since everyone is just a consciousness (a thought, I guess). How long would that last? Since there is no time, how do you tell when to start or stop? Since every consciousness in the "afterlife" has an eternity to fill with some kind of activity, it would seem like things would get pretty boring pretty "quickly." (if that word could make any sense in an eternal context). Without some material "stuff" associated with consciousness, there would be no way to measure where one consciousness leaves off and another one begins. Sounds kinda messy.
One benefit of being retired is that I have control over how I fill my time. There is joy in beginning a project, working on it, and ultimately completing it. Then figuring out a new project. In an eternity, none of that makes any sense. What would be the point? As a retired person (especially a person who is considering an elective death), there are definite limits to what tasks are possible. There is joy in seeing if I can complete a longer term task before my body stops metabolizing. A race. A competition between myself and time. But in an eternal context, none of that makes any sense. Why take up any task at all, since I have all of eternity to get it done? Tasks (even spreadsheets) involve interacting with some kind of material, and in the afterlife there is no material. The concept "completed task" makes no sense in an eternal world. Since "task" is incompatible with an infinite timeline, how am I to be occupied in an afterlife?
Afterlife sounds awful. I'm glad it's not real.