When I was in high school and when I first came to school, I liked the idea of fraternities, but I never thought I was that "type." When my friends in the dorms went through formal rush, it seemed like so much fun and I kicked myself for not going out on a limb and giving it a try.
Towards the end of the Fall semester and beginning of Spring Semester, I had been hanging out with one chapter quite a bit, and thought that I was going to join through informal rush. Well, it didn't turn out quite like i had thought it would be. I was pretty bummed out for a while, but I realized that everything happens for a reason. Later, I was invited to my fraternity's Christmas Party, and even though I didn't realize it just then, I was sold! Now, I can't even imagine being in any different house than Phi Sigma Kappa!
Back to the original topic, I'll admit that the reason that I primarily joined was for the social scene and the fun, since I was pretty shy and never a real hit with the ladies

Once I joined, however, I found out that fraternity means so much more, from the brotherhood to the real-life experiences and administrative stuff. As a side note, being in a fraternity has made me much more sociable, and even my parents comment on it from time to time!