system
Given the following post, respond as if you're commenting on Reddit:
human
[Buffyverse] When Buffy and other folk died they talked about where they went. When Vampires die, where do they go? When Angel died? What happened to the souls of their victims after becoming infected? Does Clement have a soul? Do any demons? Where do they go after they die?
gpt
When vampires die, they simply cease to exist.  
When Angel died, his soul was judged and likely went to a heaven dimension.  
When a human becomes a vampire, they die and a demon takes up shop where they used to live.  Their soul leaves their body and goes to wherever it would have gone had they died of natural causes.  
Don't know about Clem specifically.  
Demons for the most part don't, however this isn't 100%.  Vengeance demons for example have souls.  They are made from humans though, whereas most other demons are not.  The demons that do have souls would most likely see it return to its home dimension.  In the case of vengeance demons, D'Hoffryn probably bottles them up and uses them to fuel spells.