Yes, I do agree that OP is not a bit realistic at all. However, after a long day's struggle at work or school, it's time to just sit back, watch the show, and relax. Don't think about anything, don't worry about anything, just enjoy. At least what OP offers is a bit of an escape from this complicated world, and a bit of a reminder of all the wonderful things on this world.
OP is suitable for humans across the age, however parents must be aware of the revealing clothes that some of the female characters wear. Even though there are violence and blood I feel that the violence level is pretty much same as Tom and Jerry. Thus OP is highly recommended for those seeking a bit of fun.
p/s: Do not worry about OP having so many episodes and having to start from the first.

This series is VERY enjoyable. It made me laugh XD, it made me cry T_T , it also made me think >_<. Like all anime there is a moral behind the story. The moral of One Piece is to never give up on your dreams no matter how hard or how rediculous it may seem. And believe my Luffy and the crew have been shot down so many times and have gotten up. After every fight each of them become wiser and stronger. They learn fro thier mistakes just like normal human beings ^_^. It also presses on the matter of trust, friendship, family, and bonds.

The Humor of One Piece is very funny. It's very over draw and very espressive and colorful. You get so the characters make the most outragous faces in the world and it's very funny XD.

This is a well presented anime. Its quite original, though I can see some minor recycling of some portions of some characters. Some parts are slightly stereotypical, but for the most part, its very original. There are also numerous possible couples, for those who like that. All of the crew are close, providing multiple possible couples for people to choose from. For me, that's a plus. I love an anime with couples. The romance isn't really important in this one, but it is present. Some of the types of couples are quite original.

The enjoyability factor and humor factors are high. If there's not a cool fight scene, there's usually humor. The humor is usually focused on the Captain, Luffy. He's not what you would call a normal Pirate Captain.