If I have learned anything at college and through internships it is that personal relationships run the world.
Building social connections, not only through current friends but also future coworkers and employers, is an important objective for anyone. Not only do strong connections boost productivity and happiness in the workspace but they also allow greater opportunities to open up for you in the future.
Now, I am not saying that you should just make a bunch of friends or connections without sentimental value or genuine feeling. Make real friends.