Once piece is too silly looking and thats why I have never watched it. Naruto and DBZ are still sorta silly, but they are self serious which is what I like. Basically, I dont want intended comedy out of my anime or manga. Correct me if I'm wrong but One Piece i just too ridiculous and I think it looks kinda dumb.
You're pretty judgmental for someone who haven't really gotten the grasp of what One piece is all about! Try save your criticisms for a show you actually watched!