system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why does Wolverine have PTSD?

I understand Wolverine has fought in almost every war since the 1700's. He's been around a long time and has fought, "died" and been revived by his healing factor countless times.

But the thing I don't understand is this. Wolverine knows he's immortal. He has nothing to fear from either hot steel or cold steel. Neither blade nor musket will harm him. This means he can go into combat without any fear, because he cannot be harmed by combat. Any injury will be healed up within moments.

Why does Wolverine have PTSD if he has nothing to fear from combat? It would be like a soldier being able to respawn after being killed in combat. Without the threat of death there's no fear, and so because of this war would be almost like a game for Wolverine. It certainly was for his brother, who apparently looks forward to combat as a form of entertainment.
gpt
What you're describing is basically his brother. We see him as a ruthless soldier who isn't bothered by anything he does and kills as easily as he breathes. He does not seem to have any signs of PTSD whatsoever.

Wolverine, however, is seen to be bothered by the killing. This is the reason he quits the 'team' of mutants in the first origins movie. His PTSD revolves around the atrocities he committed and saw being committed during the wars.