I'm not sure the reluctance to marry is exclusively a male thing--obviously, since I made a conscious decision not to marry. I'd rather impose my own limits rather than have them imposed for me, I guess. I wasn't much impressed by the video--is having your own space a bad thing? Who cares if it's in the attic, or basement, or a spare bedroom. Silly.
I have a young relative in Portland who's not interested in marriage, but they've been in a relationship for years, and they work and go to school. I imagine society is changing in ways that discomfort elders used to the old ways. I'm not sure this is a bad thing.