I hated Purdue because pretty much all the students were in frats, or in Campus Crusade for Christ. I'm not into frats or Jesus, so I felt there was not a lot for me to do... On weekends, you had to know people to get into parties, or there were Crusade functions. That was it. I had a really hard time meeting people like me - like to have a drink every now and then, but serious about school. And I know this makes me sound socially ******ed, but I've attended two other campuses since then and found non-West Lafayette students to be much more friendly and interesting.
That said, I was a liberal arts student and I lived in the dorms for two years. I think pharmacy students are probably less into grinding in dirty basements and wearing matching pink popped-collar polos. Also, I wasn't 21 most of my time there, so bars weren't an option (but the few times I went to the bars there, they were soooo crowded and not a good way to meet people). I did meet some cool people in one of my extracurriculars, but I also had a hard time meeting people through clubs because the clubs were mostly huge and everyone entered with their friends. A LOT of Purdue students still hang out with their high school friends - in my experience it was more cliqueish than my high school ever was.
Oh, and again this is probably more liberal art specific, but I was told that I'd only have huge lecture hall classes my freshman year. Not true! I had 500-person classes even in my last semester. I didn't know any of my professors personally and lots of times I just skipped class and read the texts. I got really good grades, but I don't think I got as much out of Purdue academically as I could have. I did do a research project, which was cool, but other than that one prof I can barely even name a member of faculty - sucks for recommendations! I had a lot of classes taught by TAs too.