Completely valid points *fairy princess*!
Would just like to say, though, that it is also perfectly normal and extremely easy to have a social life that doesn't involve "going out" in the drinking sense. Newnham's bar is dead, utterly...but that does encourage everyone to go out and actually get to know people which, honestly, is really good (and not difficult). Some other colleges have such a fantastic *college* social life that people quite literally never socialise outside it. That I find extremely worrying! But I do completely concede that the college bar is not exactly social capital of Cambridge...ahem.
I've said before and I will continue to say: The only thing that restricts your social life is you.