I assume I speak for most men that it's a little hard to imagine my mother in a porn movie, if only because I'm too old to be in one myself.  But seeing the sexual side of one's mother helps complete one's relationship with her.  

Providers are both human beings and sex objects.  They should be treated with respect as well as desire.  Just as I wouldn't want to disrespectfully forget that a provider is a human being, I wouldn't want my sister to be seen only as a sex object, either.  But I'd be happy for her if she were seen as an object of desire.  It's the crudeness of your example that I'd object to, not that she was wanted.

I'd have much stronger feelings about a wife or girlfriend.  It REALLY turns me on to think of her being the object of desire.  My dream is to have an "open" relationship in which I'm free to see providers and she reaffirms her desirability by me seeing that other men want her.

perfectly justified to ask legitimate questions.  I don't have a problem with my sister, daughter, Mom, Aunt and female dog being  someone's ATF.  But finding out my brother, Dad, Uncle and male cat were also, that caused me to pause and reflect on my chosen line of work.

If my mom, sis, aunt, cousin, niece, etc. were model material, I would say "Go for it".  I know, if I had the looks and body for it, if I were a female which I'm not, I would be seriously tempted to use my attributes to the fullest extent.

Think of Hooter's girls for example.  Aren't they using their looks to get bigger tips?  Damn right they are!

I might feel uncomfortable if a pal made a comment about a female relative who was doing what I said, but I would like to think I would get over it quickly.  I might also feel flattered that I had a relative that was enough of a babe that other guys wanted to look at her.  After all, it's their life, not mine.  And they're going to have sex sooner or later, too.

Not really my place to get all bent out of shape over their life decisions.  I have made mine, and the ladies I see are someone's mother, daughter, sister, cousin, niece, aren't they?  So what's the diff?

Swim

at 89, she shouldn't be getting too worked up.

In all seriousness, and at the risk of exposing my own prejudices and hypocracies, I would not be doing cartwheels to learn that any family member of mine was involved with this hobby business because of my worries over their safety and legal risks.

I would love them, of course, and support them if it's the thing they want to do, but to say that I have no issues with it, would be a bold face lie.

(Or is it a bald face lie?  I've never figured that one out.)

She was a provider for many years. She is my age,(50's) and has been retired for a long time. Most of the family new, or suspected what she did for a living. Actually, if I had gotten into the hobby earlier, she may have been able to help me out. We've always been close. (No, not that close) If it were my Mom or sister, I really don't know if I would have had issues with it or not.

I'm going to go the other way on this.  When I met my wife, she had been a professional model and she did tell me that she did nude modeling and there are several photographers with negitives on file.  I had an uneasy tie accepting this for some time but finally put it aside and in the 25 years we've been married it has neve been an issue.  From my response to knowing this of her, I am comfortable saying that if my mother (though deceased) or sister (into her 60s) had been in the profession, my New England conservatism would show through however, I'd eventually get past it.  We have certain mores instilled in us from birth and though we can put them aside and rationalize it there is always a line where they surface.

No, it doesn't mean I'll look at them in porn or even see them naked. I'd consider comments to me from friends about their tits (or other parts) to be . . . extremely uncool.

Why? I don't know why it works that way. I would say that learning details about your mother or sister's sex life is always disturbing, no matter what it is. Nature makes you that way deliberately.