Interesting discussion and probably deeper than that of simple art.
I've drawn for 30 years and have never had a spouse question who I draw or what I draw. I've gone to life classes for years drawing male and female forms and I find the males can accept the female forms, but not the male ones as well. It seems to create a threat and I find that interesting. The last thing I'm thinking about when drawing a nude male is what his tackle is like!
I've drawn portraits of spouses and am a realistic artist, so some are liked, some not. Many men are drawn to the female form as it is a more traditional form to draw. Males and females are drawn to beauty. All our eyes are trained to look for pleasing features, symmetrical features, large eyes, etc.
Many beginning artists start with what I call 'soft porn' found in magazines and this is the stuff that women find objectionable. Real art isn't airbrushed and perfect. Real art and life has wrinkles and character. Real art shouldn't mimic a magazine ad. Real art should be from life and from thoughtfully created reference images using real people with character and background. The light and scene needs to be the inspiration, not just the face. Yes a pretty, youthful face is pleasant to look at, but it is generally pretty boring to draw.
Personally, no one can tell me what I should or should not draw as an artist and I don't believe anyone I know would do so. (even if they did I wouldn't listen to them

) Inspiration comes from many forms, however if found that if I continually drew one specific genre, I would find it stifling professionally.
So gentlemen I think that you should dust off your pencils and get your closest model to sit for you. Yes, you run the risk of the pencil telling the truth, but I do think that the final result will be pleasing to everyone.
There's another option for a thread Bob - draw your spouse from life!