Why are we drawn to stories of self-sacrifice?

This article contains spoilers!

Okay, I had to put the disclaimer because it's true – this article does contain spoilers. However, this film is seven years old. But even though that's the case, you may be in the same boat that I was a mere few months ago, having never seen any of the Avengers films; so there's your warning. Stop reading if you don't want spoilers.

Right, now that that's out of the way, let's discuss Avengers: Endgame.