When you're a kid, you don't think anything of it, but that's because comics are used as propaganda tools to peddle social conditioning. Which is why when you're a kid, the idea of sacrificing yourself, even to death for others is seen as a noble and just thing to do.

It's not until you take the red pill that you realize it's all bullshit. But that's why they start on you early. To reinforce the bullshit.