This is how your wife looks to you when she is preparing to go to bed with her lover. Do you notice the pouty lips and the look of desire on her face? Her nipples already erect from merely her thoughts of anticipation stick out like the eraser on a pencil end. She wears her sexiest lingerie, that you bought for her by the way and nothing but silk stockings for her lover.
This is how your wife looks to you as she prepares to go to bed with you. She may not be wearing metal and chain bed clothes but you would not be receiving less sex if she were. Not only are you not allowed to touch her feminine charms you're not even allowed to see them.