Boards
Couples.
You know how when you have mates who are really good people to be around? And then they get hooked up with some long term girlfriend who they love to bits?
Well they become really really boring don't they?
You don't want to go out with them because you know they'll be texting their bird and not coming to dance with girls and stuff.
Well, I've been thinking. Is this a strong enough reason to never get into a long term relationship until the age of about 24/25/26, when your youth is slipping away?