system
A chat on 4chan
human
If you are materialistic positivist then there is no reason to believe that your consciousness proceeds to exist after your physical body stops functioning. Spiritual people have their theories or dogmatic beliefs. If you aren't satisfied with any available theories, ideas or observations, then it is pretty much a unsolvable mystery left for endless speculation. There are many ways to approach this, like we know perception of time can be changed drastically and in many ways, like for example when you sleep, when you are under stress (adrenaline slow time for me at least). Huge doses of psychedelic substances can even make you think time goes in reverse. You know how a cigarette slowly burns out? When I was on a huge dose of acid I saw it going in opposite way. It is all tricks of perception, perhaps, but if there is no perception? Technically, all elements which your body consists of existed long before your perception emerged. I think it means that after death it is the same as before death. Is this a coherent model and explanation? Idk kek
gpt
>If you are materialistic positivist then there is no reason to believe that your consciousness proceeds to exist after your physical body stops functioning.
Not true. I'm a materialist and physical reductionist and I can think of many. 
All an afterlife requires is a continued structural binding to your conscious. Could mean boltzmann brains, or a sim, or any number of weird quirks. 

As I like to say, hell isn't just for the religious.
human
I can also think of many, but if you believe any of these without proof you aren't materialist nor reductionist. Boltzmann brain is a fucking thought experiment.