... First, I completely agree with you.
At the same time, I contemplated starting a business while in college too. I was advised by my teacher (an educator which I truly respected) to wait until college was finished. Looking back, I believe his advice was appropriate due to the fact it takes a lot of time to properly run a business. Also, people always think they are prepared for the `next step` but often we learn we are not as prepared as we think.
I would give the same advice my educator gave... wait until your classes are complete. Concentrate on them (the classes) while you prepare documentation, prep your website, make a list of contacts which can help propel your new business. You would be surprised how many people you meet in college that will become helpful if not necessary to run your new business effectively.
With that said, you will have have to make you own judgment about starting your business now. There are specific situations which make it evident that running a new business is more fulfilling than college.
All in all, it IS a tough decision. I do suggest that finishing college may be more important in the long run. ...and I am the guy who has used very little of my college education directly. At the same time, I have met wonderful partnership opportunities due to my college attendance.
Tough question to give truly helpful answers, without fully understanding your specific situation. Good luck.
Vincent Wilcox (a.k.a. KRAKR)
My band: Letters Make Words