One Piece. I love this series and you should too. I admit, when I first decided to try reading the series I was put off by the horrible 4kids One Piece dub, thinking the manga would be utter crap, aimed at pre-pubescent kids. But when I actually started reading it and got into it, I realised it was an interesting and worthwhile read.

I'll keep it simple with a few key points as to why you should read it: it's characters are interesting, the battles are usually satisfying and the manga isn't the typical one-dimensional stuff you usually find in shounen - while it may simply look like a manga aimed at children from the outside, the stories of people in One Piece usually have much deeper meanings.

You may be intimidated by the length of it (631 and counting!). Don't be. As soon as you start, you'll fly through all those chapters and be hungry for more. Your desire for OP will never be sated. Maybe the art is a turn-off? It may not appeal to everyone, but after a while you might just find yourself loving it and the unique character designs in the series.

You might be debating more reasons in your head but the easiest way is to simply sit down and try reading it. If it doesn't initially seem that good, don't give up! You could be missing out on a potential favourite. I recommend reading at least fifty chapters before passing any judgement but that's just me. If you do not have that much time to spare at least aim for twenty.