If it's on the PC? Absolutely.
On the console (at least Xbox 360)? Don't go near it, it's absolutely unplayable (at least it was for me).
Regardless, I was really shocked by the sheer amount of hate the game got, I thought it was really, really good. It's not as good as Asylum or City, but that's like saying gold isn't quite as good as diamond. I also liked the fact that the game (at least to me) felt significantly darker and more grim than the previous Arkham games. I also contend it's the only Batman media (at least that I've seen) that made Bane totally awesome.
One piece of advice, don't bother trying to go 100% on the Riddler trophies. I won't spoil why (feel free to youtube it) but trust me, it's not worth it.