Good points. When the wife meets with her lover or brings him to the home for solo fun, it makes it all more likely to happen. That way, there's only two schedules that have to merge, not three. And (the big benefit) - she's going to be less inhibited if hubby isn't there watching, as if she's a performer. My wife and I found that in most cases, sex was better for her if I wasn't there. I was a distraction.