Why does everything have to explode or kill you even after it’s already been slain?

Why?
The game can be hard, and that's fine, but it shouldn't be unfun.
I always hesitate to pick up loot because, of course, something is going to explode, or a monster will use a skill—even after it's been dead for 10 seconds.
This isn't fun.
If you kill them, how can they still use skills?
And why does almost every monster explode or do something that knocks you out after it's already dead?
The game forces you to kill everything first and loot later, but we shouldnt be forced to do it. Not everyone has time for it.

Agree. It is just a lame and cheap mechanic. Only wastes your time.

dei hires made poe 2.