Non-religious emergency responders/medicos of Lemmy, do you believe that something is 'missing' when looking at a corpse?

Firefighter here. I was reflecting on a fatality I attended recently. My thoughts wandered to how a body looks like it is ‘just matter’ in a way that a living thing does not, even when sleeping. Previously I assumed this observation was just something to do with traumatic death, but this person seemed to have died peacefully...