I had the exact same experience when I left BCA, only it was with a little twist.
I got pulled after my I & Me in August so I could go home and attend post-graduate school in Boston. It just didn't work out...I mean, at BCA I was on restrictions or bored out of my skull 90% of the time so it was actually a nice change to go sit and spend a few hours studying. But when I went home and started making the 45 minute commute by subway into the city every morning at 7:00 AM, I just couldn't keep it up. Not only that, but rather than study at nights, I was just like you...I wanted to be out making up for 2 1/2 years of BCA every night, partying with my friends, making up for all those months of sexual frustration. I lasted 2 months there and just quit.
A year later I decided to go to college as planned, but I was working and making a ton of money and enjoying fuckin' around with my friends, so I decided to skip college. Then things went to shit over the next 6 months as I started getting really bored with the whole 9-5 lifestyle...started doin' a lot of hard drugs again, kicked it with a pretty shady crew, ended up getting arrested twice...so I tried once more, ended up at Pepperdine, and have been doing really well here for the last 2 1/2 years.