I will get on to the why. And don't worry I will not make it too long since I think people won't read it all meaning it will all probably go to a big waste of time.
I will not give a summary of the series because you can just read it in the main page or pretty much anywhere else.
OK now I'll say why I gave it a 10. (Scored FILLER-FREE).
Animation (for the most part) gets a 10 and the music gets a 10 too (i also believe EVERYONE should give this a 10 music wise). I believe it has the best music ever along with One Piece CLOSELY beating the music of Pokemon, Bleach and Fairy Tail. The story gets incredible as it progresses and so does the level of enjoyment. Naruto and Sakura become better characters than before but Sasuke declines character wise (that's a given though since he does turn into a heartless villain). All the other characters are as awesome as they were from before (I myself only don't like Ino). The akatsuki are the main villains of the series and in my opinion best villains ever (beating Phantom Troupe and Homunculus by a LITTLE). They have unique special abilities and are VERY fun to watch. And there's Sai, Sasuke's well ... replacement and he is actually not a bad character at all either especially as the story progresses. The action is superb and VERY entertaining and at times you don't know who is going to die (not mentioning names). Sometimes the action is clever too. A lot of strategy is going on in them. So as a result from these things there is too much suspense in it for words. It is unpredictable and VERY suspenseful. They are in such situations at times that you do not know how the problem might get solved.
Now I will counter the negative things it might have/people say it has but some reasons might not be good.
First problem people say it has- Some parts are RIP-OFF from hxh (both). I have watched hunter x hunter 2011 (my 2nd favourite anime if anyone is wondering where it goes in my personal rank) but I do not at all think this series is a ripoff of Hunter X. The whole eye deal is similar. But it is not a copy.More like inspiration. a copy is doing it exactly like it was but the eye deal in Naruto has a different twist and special things added to it. Like i'm pretty sure Kishimoto (the author of Naruto) knows that something this big will be noticed. Why did he do it? Because he knows it's no big deal or that it shouldn't be. And I haven't heard the author of hunter x complaining to him either so yeah Naruto is not a copy of hxh at all. And to anybody who mentions the hunter exam and Chuunin exam rewatch both they are VERY different. The concept (again) might have been taken but the actual content is EXTREMELY different.
Second problem people say it has- FILLERS. I myself do watch SOME fillers. Fillers that I think I might enjoy. Naruto doesn't have too many enjoyable ones but some (Chikara arc for example) are very good (again my opinion). Anyways fillers are not a problem for me because well I skip them. I type in 'list of Naruto (Shippuden in this case) filler' in Google. Then it's easy to go from there and I know what episodes are filler and that I need to skip.
Third problem people say it has- the length. Like with all big series there is no RUSH for you to finish watching it (atleast that's what it is for MOST people). It took me 4 months to catch up with it but I took the time (I am busy most of times).
Anyways I know there might be reasons you will disagree with but I hope you get the OVERALL message as to why I gave this a 10. Action, suspense, great animation, it is almost perfect (for me).
Finally, I hope you enjoyed the review (took me quite a lot of time to do it) and that you give it a chance (especially from episode 110). Before that it is enjoyable but I find from episode 110 it's MIND-BLOWING.
