I take it that ninjas solve problems using the most efficient way possible. Sometimes that involves killing people. Naruto is an idealist who is somehow able to make it into a reality. In a show it's okay, but in real life the opposite is true. We rever the efficient and the logical while looking down on the dreamers. Dreamers who can make their dream come true are on in a million.
Another way that I think about them is that an idealist (the ones that make it through) changes the world. The realists keep it running.
If it's not Isuzu-chan Mii~