Naruto Chapter 372

[Idealistic]

So, the logic is you make others feel the pain, and some new kid has his parents killed and thinks "wait till I grow up and maim/torture/kill Pein's ass"?

Doubt it, as Pain is the only who probably thinks this way, which is why he is the villain.

You don't see Naruto or Sasuke wanting to cast judgement on the rest of the world.