I don't understand this and here's why. For straight porn, the primary audience is men. Most men don't have huge dicks. Why would you show porn with guys who have huge dicks? Wouldn't that just make a lot of men feel insecure and inadequate since the vast majority of men don't have huge dicks like the men in porn do. I don't get this. Why alienate your target audience by making them feel inadequate? I mean, wouldn't having guy's in porn with average to slightly above average size dicks make the viewer think, "hey, this guy doesn't have a huge dick, and she seems to like it, maybe I have a shot with her." (We know he doesn't, but it can enhance the fantasy).