naruto is a very good influence on young people and you can relate to many of the charectors . its different and unique. i live the plots and everything else , its full of action and adventure and it really brightens my dia . Nothing makes me feel better when im upset than watching a naruto episode.
Anime: I think Naruto's greatest strength is its characters, but it's certainly not its ONLY strength. The plot gets better and better, the música is beautiful, the setting is fascinating, there's no over-the-top fanservice or gore, it's made me laugh, it's made me cry. It's just... perfect. At least, in my opinion.
Character: everything. :D He's sweet, funny, innocent, adorable, cool, interesting etc etc etc. I couldn't ask for a better main character. I don't usually like main characters much (e.g. Harry Potter is a boring emo, but the characters around him are all awesome), but naruto is my segundo favourite animê character. =^◡^=
The fact that the Akatski are like organization 13. Sakura yells like Donald. Sai can be clueless like Goofy. Sasuke is lost to the darkness like Riku. The fact the naruto is hunted down for his powers so they can use his powers for evil like with Sora. The fact the Quinton Lee placed both Iruka and Axel.
If it'a about the anime, then EVERYTHING! It has great characters (except Sasuke in Part 2), great story, depth, feels, etc! If it's the character, then everything too. Just as ImAnEasel said. He's a great main character and doesn't go back & forth like many characters in other anime. Oh, and he's much much much MUCH better than freakin' Sasuke!