You have someone in your life whom you honor and revere so much that every hurt on them is inflicted on you as well. And the closer they are to you, the greater the pain.

One day you will be the one called Master (Naruto). You'll be the one to treat others to ramen. We can't stay kids forever." - Shikamaru Nara (Naruto)

No, you don't get it, thats why I'm telling you. You think you get it, which isn't the same as actually getting it. Get it? (Kakashi)

It’s foolish to fear what we’ve yet to see and know.

Naruto: BELIEVE IT!!!!!!!!!!!

I just want to protect them no matter how much pain befalls me.

Being hurt inevitably breeds feelings of hatred towards your attacker. But when we hurt others, we have to deal with their hatred for us, and our own feelings of guilt. But knowing what it feels like to be hurt is exactly why we try to be kind to others. That's what makes us human.