I guess I am the exception more than the rule. My wife and I sleep with separate blankets and we seem to be quite well. Just celebrated 15 years of marriage last year and I don't see that being the top end. I get what you are saying though. We both have winter blankets and summer blankets. My wife uses her winter blanket much longer than I use mine.
I give you a month or two more... ;D
As said, I don't think it is the blanket itself, but what it represents. For a lot of people here, a relationship is only in the home, meaning there isn't a lot of togetherness outside, with lots of activities separate. So, then if they are separate in the home also, where is the relationship lived?
Yeah, like I said, I get what you are saying. My wife and I sort of work together, so that helps (I think), we also spend a lot of time together in the summers camping. I don't think we would be able to do that as much if we didn't share a closeness.