I guess because it feels more open but I think being married is way sexier because it's really like your soul partner in a permanent fashion and then you strive for it to be something permanent and that type of commitment and trust if you can achieve it is so good for the soul.
I am an obsessive garage cleaner - my wife and the neighbors make fun of me. I remember that my father was the same way and now when I'm out there unearthing things in the garage I realize I am becoming my dad!