Having a roomie can sometimes be a hassle, but it really is a lot of fun. And frankly, you'll probably be having a roommate when you get an apartment after college, so you might as well get used to it. And as for if you want a family... roommates who you're stuck with for life.

And if your college has a roommate matching program, they're likely to match you in pretty well. I've got three roommates right now and it's awesome.

If you consider yourself an introvert, you'll eventually be thankful for roommates. They're your first new college friends and a good starting point for a new social network beyond your high school. Only super-social people should be in single room, because they don't need roommates to help kick-start their social life; an introvert in a single room would just be way too lonely, and no matter how much you think you can cope with being alone, you have to realize that you are innately a social animal.