I feel obliged to answer this one.

But I don't know why.

Um. I've been single --- I don't even know. 13 years I think - something like that. Apparently its a maladaptive trait. I think its common sense. You definitely can't take anything I say on this subject matter as sane! But I will say one thing -

The only thing I miss, of all relationships (because I really am the complete social outcast, so I am including best friends, family, boyfriends / girlfriends, the lot - in this)... The only thing I miss out of all that, is a hug when I get home after a bad day. I miss that so much. I would happily swap a day in the life of, with a coupleton - just so one more time, I could have a hug after a horrible day at work.