Not that I'm the best to judge, but male porn actors seem to be mostly in pretty good shape.

these days they're all young and fit and well endowed. but the camera is never focused on them or their faces, like in the old days.

the ron jeremy days are long gone.

He was young and fit in the seventies. He's just stayed around in that business long after his expiration date.

I seem to recall that the original assumption in porn was that men would prefer unattractive men, but reality (as measured by sales) proved different.

If that was the case, why wouldn't they all have micopenises?