Don't worry about transferring just yet, RF. The best thing I got from college, aside from all the fun I had, was the opportunity to learn more about myself than any other circumstance in life.
I spent 4 years learning exactly what kind of man I wanted to be...if you can do that at OU, then stay at OU. If you feel you'll do a better job closer to home, then so be it. I went to a fairly large school (20k students) and must say that what I learned about myself in college I could only have done by being on my own, away from home, with tons of people around and only myself to turn to when the shit hit the fan.
1 and a half years out, I feel like I came out of college a better man, more sure of myself and what I want out of life. If you can do that at OU, then maybe you should consider staying, rather than worrying about transferring.
As for the partying/drinking thing...
I will admit that I did my fair share of all that (and I have the liver, or lack thereof, to prove it) and this is what I have to say. It's a hollow existence with a little more sex and excitement than otherwise. When I ran in those circles, I found myself feeling bipolar, swinging from immense highs (beautiful women, night after night) to huge lows (hangovers during finals). What I found was that I could balance the two...my social and academic life, but that I could save more energy by not balancing the two, and choosing less extreme forms of pleasure. So I cut back on my boozing and tailhunting, and became a better man for it. I am consoled knowing that I can turn on the party vibe at any moment, and also that I am in control of it. Some people go out and party just because they don't want to hear about how much fun it was the next day. When I found myself feeling that way, I knew it was time to cut it back a bit.