I have to wait until I get paid, which is still almost a month away, but I consider getting it. I've been hearing things I like about it, and the thought of bouncing around Gotham is appealing.
The thing I like the most about it, is the combat system. Basically, I'm of the opinion that WoW has more or less perfected the system they use ( with auto attacks and skill bars ), so any game that tries to emulate that system completely, is going to fall short. I find that in most games like that, the skills are basically the same as in WoW, but usually less interesting versions. Having a combat system that's actually different ... is such a nice touch.
Right now, the main argument against is that The Old Republic is .. well, 3-9 months away ( Q2/Q3, I think ), and I'm definitely going to play that unless it fails completely and utterly - which, of course, it won't. I'm not against playing an MMO for just a few months, but that does make it slightly less interesting.