This year I am being horribly antisocial, and I don't like it

It's not really a choice, more a condition of circumstance. Kittencat's nursery fees increased significantly this year, my income did not. Being a student with a small child basically means being poor. And being poor is no fun. I never accounted for a significant proportion of my income to be disposable for the marvelous fripperies of going to gigs, seeing friends, but, for the time being, there just isn't a way to budget for a social life. Arse.