I love One Piece too! I can proudly say it's probably my main thing and has been for as long as I can remember.
Sure, there are about 600 episodes, and it's not even close to ending, I honestly feel like the story is barely starting. Best characters, even villains, I guarantee, you will have some kind of strong feelings for them. I love how we get to see everyone's story and understand each characters.
Totally understand people who can't watch 300+ episodes. Even I never thought I'd enjoy something with 300, yet alone 600 episodes. But I'm really glad I tried One Piece. It doesn't even feel like there's 600 episodes. In fact, I wish there were more and I wish it never ends. Once you catch up to that 600 episodes, you will want more (if you're into that genre). I'm glad hearing the reason for not watching One Piece is because it's too long and no complaints about the art. I've heard people saying they can't take the art, and I'm just... wow, your loss pal. The story is amazing.
As for Naruto, I've actually been meaning to start on it. I've watched a few episodes, but it was random, never followed to the story. The thing is, I've heard of how terrible Naruto fillers are, which is why I've been putting it on hold. Maybe I'll read the manga first? I don't know, I actually really like watching my action because it's hard to tell what's going on sometimes with the manga.
As for Bleach, no one has ever really recommended it to me. No one I know even talks about it. I don't know and care much about it.
I also really like SAO. The first half of the anime was great, the other half was good, but it felt like a huge jump from the first half? I don't know, may just be me. Heard there's gonna be a second season for it this year though, yay
