Why go out when you can sleep instead?
If there is one thing I have learned from my degree (Archaeology and Anthropology) it is that no one ever fits an 'ideal' type such as the 'hyper-social student' that the media presents. And so, instead of creating a breeding ground for social anxiety and even a damaging retreat into isolation, perhaps we could take a bit more time to do or see things a bit more inclusively.
My best mate is turning 30 in November, and has sadly told me, instead of having a full on two day bender of a birthday, she is keeping it "low key", because sadly, she doesn't think any our friends would come. One of the babies is teething, the other isn't sleeping well, one can't afford the trip... etc.