Wally
Dorm doors are usually open all the time, social life is actually better than I expected it to be before I came here. Whether you like to party or not, you'll find the group of people here (or rather, they'll find you) that fit your tastes.
Charlie
Harvard has something going on all the time. Whether you want to go to a dance or listen to a renowned politician, you can do pretty much anything. Also, despite the fact that students work very hard, they do find time for a social life. Most people aren't cooped up in their rooms all day long and don't talk to anyone. People eat together, visit each others' rooms to hang out, etc.
Paige
The typical harvard prototype is a the male guy who is on the crimson and does crew. yeah, I know a couple. However, that's not the case at all. The social life can be whatever you want it to be. I tend to think I can assocaite myself easily with any group I want. I met my closest friends by being their neighbors and then eventually roommates. Also other close friends are people I share classes with. People who are awake at the random 2 am are probably studying or trying to do something productive. Yeah, there's the ocassional goofing off, yes we do procrastinate. Harvard students are not machines. There's always that house grille to go to at 1 am and drinking isn't an issue until the weekends. Rarely will I leave campus b/c honestly I see no need.
Vick
There are a lot of extracurricular activities.
Social life centers usually around your roommates/people in your clubs.
Chris
If you look for good ones and put in the effort they can be sweet. If not there seems like there are too many, not true. And also the crimson rocks.
Torry
I think like 30{4a082faed443b016e84c6ea63012b481c58f64867aa2dc62fff66e22ad7dff6c} of guys are in a frat or final club and 15{4a082faed443b016e84c6ea63012b481c58f64867aa2dc62fff66e22ad7dff6c} of girls, but I could be making that up. Athletic events are not generally well attended unless it is a big game against Yale or something. Theater is pretty rampant -- generally 2-4 shows a weekend. Dorm rooms aren't generally left open, but apart from the final clubs, that is where the majority of parties take place. Dating here tends to be either casual hook-ups or "you're almost married." Friday and Saturday are the main social nights, although sometimes Thursdays can happen. There are very few wild, trash-the-house keg parties here, because no one wants to do that to someone's dorm room, and the final clubs are fairly classy, multi-million dollar establishments. For those kinds of parties, one can easily go to MIT or BU.
TJ
The IOP, Crimson, and Women in Business are probably the most well respected organizations on campus. On top of that there are clearly the varsity sports, most notably crew. Varsity sports are obviously reserved for recruits and the truly talented. However other organizations rely heavily on dedication, time commitment and creativity.
The dating scene is practically non-existent, at least among freshmen. People seem to feel that once they come to Harvard a relationship will mean a huge long-term commitment, especially because so many people believe they will find their spouses here, or at least should. So either there are alot of drunken hook-ups or serious dating. Not too much in between.
Kelati
Many people participate at the Institute of Politics, the Harvard Crimson, the Harvard Lampoon, or a program at the Philip Brooks House Association. Personally I spend a lot of time at the Harvard Crimson as a part of the business board. I spend about 10 hours a week there working on marketing or ads. Athletic events aren't too popular. If I were awake on a Tuesday I would be procrastinating in our library's cafe. I have found my closest friends through various organizations and my roommates. If you don't drink on a Saturday night, you could go to a show in Boston, the movies, board games, etc. Last weekend I went out to dinner with a friend's mom and to a finals club which is almost the equivalent to a fraternity.
Alex
two things:
1) The dating scene is crap
2) I shouldn't have to kick people out of a library on Saturday night.
'nuff said.