MSU students are the best part about the school. The size of the student body ensures that you will be able to find many people with similar interests and hobbies. It's pretty hard to be lonely at this school. There is always something going on and people are always available to talk and hang out.
The makeup of the students is similar to most B1G universities. The majority of students are white followed by Asian, black, and Hispanic. Everyone seems to get along nicely and there are rarely problems with race. MSU has a good mix that will expose you to all cultures and races over a 4-5 period. I have noticed that the foreign students from Asia sometimes form up into cliques and do not really get outside of them. I think this might just be a language and cultural barrier. Fortunately each dorm has a cultural aid to help students fit in and adjust quickly.
Politically the school is much more diverse than normal. There is slight liberal feel to the campus, but a sizable portion of the student body is conservative. Whatever your views are there is likely a campus group that you can match up with. East Lansing is a considerably more conservative campus than Ann Arbor or Madison. There is a balance here that is not usually found in large universities.
The financial make up of the students is mostly upper-middle class mixed with many other situations. You'll likely encounter students from all economic backgrounds. It doesn't seem to be an issue and is rarely brought up in conversation. I don't think I've ever really talked about it with my friends.
Student interaction is a big thing on this campus. That is why you come to Michigan State over other B1G schools. The people here are friendly and it is easy to network and make connections. There are plenty of opportunities to hang out and party on the weekends once your work is done.
Meeting people of the opposite sex is a breeze at this school and is probably the number #1 unsung asset of MSU. Speaking from a male perspective I had no trouble meeting girls. Like I said earlier, making connections here is easy. In an age when many people have resorted to online dating sites, college provides an essential opportunity to hone your skills and meet your soul mate. The girls at MSU tend to be much more attractive than at other schools (trying to be unbiased). Most girls here are fit, pretty, and easy to talk to, which makes it great for guys. I would assume that girls feel the same, but I can't speak for them. All in all State has a fantastic dating scene that will definitely satisfy a scholarly gentleman.