porn is primarily targeted to and consumed by men....
men want to see beautiful women fucking...
whether they are fucking men or women.....the more beautiful the woman fucking the better the sales are.....like all fresh fruit...beautiful pussy has a shelf life and that shelf life is being wasted if it is not being fucked....

so when a man is fucking another man...that is precious time wasted cause it is not fucking beautiful pussy.......hense even porn targeted to women feels the same way...women don't want to see good pussy being wasted either.....women don't want men to fuck other men....they want to see it fucking beautiful pussy......

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" I have a like a 5 second rule for cum-- if it's been ejaculated from the penis and laying around somewhere for more than 5 seconds, I'm not touching it. I like my cum hot and fresh. " ......Holly Randall