However, One Piece is a long running shounen manga that is no where near being finished. Usually with these types of series, the anime will add in long filler arcs to allow the manga to put out more material for the main story. Naruto and Bleach are notorious for this and even Fairy Tail had to resort to doing this as well. During its early years, One Piece did this as well, but currently it has resorted to animating one chapter per episode. And this leads to an enormous amount of filler in each episode. Fights are drawn out. Running places takes five episodes. An entire conversation or death scene can take up a full episode. After a while, this sort of thing gets very frustrating, and I have had to put the anime on hold twice now.
Another issue I have with this show is the animation and this also ties in with the filler problem. The animation is very sloppy and its pretty bad when you're watching an episode and notice at least three separate occasions where the same animation is used (I'm pointing fingers at you, Coliseum animation!). The animation will also pan over crowds or go between different characters for 15-30 seconds to fill time, and it could be that no one is actually speaking at all during this.
Honestly, if you're really interested in getting into One Piece, I would recommend reading the manga instead of watching the anime. You'll only get frustrated with the filler and animation.
EDIT: As mentioned above, I have dropped this series twice: once in Puck Hazard and once in Dressrosa. I am currently four episodes into the Mink/Zou arc and am probably three episodes away from finally rage quitting this horribly animated adaption of my favorite manga. The filler is unbelievable and the animation is terrible. DO NOT watch this anime past the Timeskip if you are interested in One Piece. Please, for the love of god, just read the manga.
