Welcome to the board Stilla!
I'm a few years older than you and I just started my freshman year too, and I love it. By all means stay in college, no matter what you hear from people in the Kingdom Hall.
As Miss Peaches said, you've obviously got an analytical mind that prompted you to research and question the WTBTS teachings, so I'm sure you'll love college.
The only thing I regret about school was that I didn't go sooner. And even if you are a bit (although not much) older than the other students, chances are you'll be a lot more motivated to be there and apply yourself.
And, if your unsure which direction you want your studies to go, most Universities have a Career Planning Center which, in my experience, has been a wonderful resource. Definitely stay in school.
CD