I took a look at my finances, and it looks like I could afford to live alone. I wouldn't have a whole lot extra, but I would have a few hundred dollars each month to put in the bank.
I'm not going to completely rule out getting a new roommate, yet. If the right roommate happens to come along, I'd probably consider it. Having extra money to be able to pay some things off quicker woudn't be a bad thing.
It's a nice feeling knowing that I could get a roommate if I wanted to, but it's not absolutely necessary.
I think I'm going to track my expenses for the next month or so and see how much I spend on what, since I don't have a clear idea about that. I just have to find some method of tracking that I'll actually stick with.