Why are we still here? Just to suffer?

A meme from a game called Metal Gear Solid V: The Phantom Pain.

Why are we still here? Just to suffer? Every night, I can feel my leg and my arm... Even my fingers... The body I've lost...
The comrades I've lost... Won't stop hurting

A: Why are we still here? Just to suffer?
B: IDK Lol why?