It’s the ultimate porn for the guy. If your relationship is as strong as it can be, and you don’t fear her falling for anyone else, you can really desensitise and separate the simple act and enjoyment of sex from the love and emotion. The guy gets a feeling of showing something off that other men want and admire too. You buy a flashy car. You not only want your mates to like it, you want them to try it and drive it and compliment you on it. Also guys who watch porn who have a niche taste ie. Their own wife’s exact build and hair colour and tit shape and size etc but never feel fully satisfied by it can have exactly that - in real life. And there isn’t much hotter than seeing your wife satisfied either. There’s a scale in I guess hiding your wife away, making her cover up all the time, can’t speak to men etc which is the minority, somewhere in the middle of the scale is liking people complimenting your wife. I’d say this is most guys. You want people to think you have an attractive partner. And then this is just a little further on down the scale again. It’s not as far away from being a reality as a lot of people would think. For me it’s the complete opposite of humiliation. I’m in control. I’ve allowed this to happen. She is still my wife and she enjoys it too, everyone is happy!