There another word for it and it isn't a nice word: Double-Standard
Society, how men & women are raised (visit Nancy Friday's website), the entertainment industry... there is no getting around the idea if your a man... a single male at a swing club, viewing a man's penis on television, two men fucking each other...face it, we all have hangups about it.
And it's wrong! Period!
That said, I'm as biased as all of you! Guilty as charged!
I would love a dick up my ass. If my wife's finger and tongue feels that good, how about the real thing.
And at the same time, to look at my own dick, just turns me off, let alone another man's dick.
It speaks to the very way men and women are raised, not by just our parents, but society in and of itself.
The playing field should be level, but what one of us has the courage to rise above of our own prejudices and do what's right?
Not me!