In my opinion, the best thing to do is go to a community college first to get an associates degree that will transfer to a 4 yr college. The small classes make it easier to adjust to I think. Beyond that, it is cheaper, and then if you decide college isn't for you, you haven't wasted as much money. And believe it or not, despite the stereotypes, comparing my own education so far with that of my friends at our local university, I believe I am getting much more quality instruction simply because I am a person and not a number (class size much smaller, more teacher/student interaction).
Personally, I wasn't really sure I wanted to go to college, but I knew I needed to make more than 20k a year, so I enrolled at the local community college. At first I just planned on getting a vocational degree that would help me jump right into work in my field (better than with no degree, but still most likely only entry level positions with little chance of advancement), but now I've decided to transfer to a university to continue my education. I suggest you at least give it a try.
My reasons were just like anyone elses I guess. Partly money, but mostly because I want to have more freedom to do what I want. None of my family have a college education and my dad has been working at jobs he's hated all his life for under 20k a year. If a person is going to spend much of his/her life at work, they should at least strive to do something they enjoy, and in my case I need a degree for it.