It's true - My wife and I have been married 3 or so years, and since I bring my laptop in the bedroom to work until we fall asleep, we never have sex. Well, I say never, maybe 2-3 times per year.
Not that she's bad looking either - she's a fitness trainer with ~15% body fat. I just have too much to do. But it does promote insomnia as well - been taking pills to sleep for about 2 years now.
I guess I should rethink that practice.