When are the Scions gonna get the memo...

[LineageRazor]

From the perspective of NPCs in the game, we are not necessarily immortal. Ungodly tough, sure, and phenomenally brave - but there is no way to prove that someone is immortal. This is true in real life, as well. You (yes YOU, the real you, on the other side of the screen, reading this right now) could very well be immortal. Probably not, sure, but the only way to say for certain one way or another is for you to die.

Well, the Warrior of Light has not died yet, but in the eyes of all who know them within the scope of the game, they are mortal. They simply haven't encountered anything capable of killing them, yet. But because the Warrior of Light is a brave hero, they are constantly pitting themselves against gravely dangerous opponents and tremendously risky odds. If anything is going to kill them, it will be one of the many super dangerous missions they accept. The friendly NPCs know this, and because they care about the WoL, they worry for his safety. The unfriendly NPCs aren't about to buy into the whole immortality thing either, and so continue to attempt to find the WoL's Achilles' Heel.

Because this is a game, we know that our character is immortal. There's no reason, however, for the characters in the game to believe so.