It does have good animation, I'll give it that. But for me the animation was a double-edged sword. Considering I'm a character-oriented person, I'll always put that before most things, whether the characters be good or bad. So when a character that's...not so good does something badass and, well, the reasons behind the badassery, what's happening, or the character involved doesn't agree with me, then I won't really enjoy the show on that level. I can recommend it for that much, sure, but for me the reason I can't go back is because I don't like Kirito, so it's just that.
I don't like the action scenes because I don't like him- well, that isn't the only reason, but that's one of them. Because in those situations, I'm on the enemy's side rather than his, and because of that the "heartpounding chills" that they're supposed to invoke feel more like nerves snapping on my end. Danmachi's Bell Cranel could be this, as some of the reasons I don't like Kirito are there, but as far as I've seen he's been pretty safe.
Well, that's another thing, too. It's really difficult to like a show if you dislike the main character. Moreso if you don't like main girl. Nearly impossible if their romance is as much of a backbone to the show as it is here.
...With that said, I'll have to give Sinon Art Online a try one of these days. And sorry Netto.