wise prophet
All Star
Aight, I'ma stick with it, it's just that other anime like OP (NAruto, Bleach, HxH) have comedy, but also VERY serious situations set up and the fights (for the most part) feel serious
Here it's hard to take serious, therefore hard to care to watch but..........I do like the comedy of Lewfee and its got over 600 episodes for a reason, I'm a stick with it through the Arlong Park arc and then give my thoughts...
I feel you. I held off in reading One Piece because I took a few looks at the character design and just thought it was not good (it didn't help that 4Kids had decided to dub it). Decided to get into it since I was already reading Naruto/Bleach and close to Arlong Park I started to see why it was popular and enjoyed it. Currently, One Piece is my favorite out the three, I dropped Bleach and think Naruto is an absolute joke. I also read HxH and it's usually right there with One Piece as my favorite.
One Piece is pretty over the top and lighthearted, more so than the other series you listed. There will definitely be some characters or situations that make you go due to its outlandishness, but the series is not afraid to tackle serious situations. Ironically, given everything that's happened in the story so far I think it's capable of being more mature than the other series. Slavery, racism, classism, corruption, betrayal, tragic deaths are some of the aspects One Piece deal with.
Also keep in mind the anime censors some of the things that happen in the manga. If the early One Piece scans weren't so fukking awful I'd have suggested you read the manga instead.
Above all tho, One Piece is an adventure manga. The locales are nothing special in the beginning but once they get to Grand Line the islands get pretty good and have a sense of rich history. If you find yourself not caring about the locale and its history you might struggle keeping up with the series.