To get right down to it, why would I want to go out of my way to have a guy play with my balls when I have a hot chick standing right here waiting to get started if only I give my consent. I usually have to work really hard to find a women who is interested in touching my balls, so its kind of a real easy decision.
Some years ago I found a small nodule on one of my testicles and decided that the prudent course was of course to make a doctors appointment for an initial assessment. At that time our family doctor of many years worked with several other female doctors in a group practice and when you went for a consult and two were on call, it was a bit of pot luck who would call you into the office - the male or female doc.
Anyway, before leaving for the doctors, my wife had one of her total disconnects from reality. I was going out the door and she told me in a totally serious voice, not unlike a mother talking to a pre-schooler, if I had seriously considered that I just might be called in by the (younger) female doctor. She talked very cautiously, almost as if I had never thought this through and that now, just minutes before leaving, I might end up in hysterics.
I think I gave a big sigh and I know I certainly rolled my eyes to high heaven. I answered that, good grief and jumping Jehoshaphat, I absolutely and sincerely HOPED that it would be the lady doc. She looked flabbergasted and then flustered, apparently not really thinking things through herself. I laughed to myself on the way out the door and I know she heard it too.
So I guess this odd kind of thinking goes for both genders.