Excellent discussion.

One fact I would contribute is that women throughout most of history have been treated as property.  Much of what you all said about the status of women before prohibition was reflective of this.  I'm old and I can remember when, in the USA, a woman could not get a loan, a mortgage, or a credit card without a male cosigner, if she could get one at all.

And, as we can see from current history, many men still view women as property, indeed, as playthings.

In addition, as a lifelong reader of Playboy (and at the risk of starting something), I must, with some trepidation, question how   Playboy pictures can be conflated with pornography, unless the conflator believes that nudity is inherently pornographic, a position I do not share.  I would argue that said person, at the least, has never seen a copy of Hustler. nor an image of the Venus de Milo.  

Why for that matter, do you think the great masters of painting have painted so many nudes?  I guarantee--as Justin Wilson used to say--it wasn't solely because of an abstract appreciation of color and form.

Once more, an excellent discussion.