CFNM scenarios usually involve teasing and humiliating the male partner, which can add an extra layer of excitement for viewers. The clothed female might order the male partner to do certain tasks, such as kneeling or crawling, or she might deny him sexual satisfaction until he has completed a certain task. This type of control and domination can be extremely arousing for viewers.
The humiliation factor is often a major part of CFNM scenarios. The clothed female might make fun of the male's body, or even ridicule him for his lack of sexual knowledge or skills. This humiliation can be very erotic for both participants and viewers, as it heightens the power dynamic of the situation.
CFNM also often involves some type of bondage. The clothed female may bind the male's hands, feet, or even his entire body to add an extra layer of excitement and anticipation. Bondage can also be used to increase the humiliation factor, as the male partner is powerless to resist the clothed female's demands.
Finally, CFNM porn videos and pictures are popular because of their taboo nature. This type of sexual activity is often seen as taboo or even shameful in society, which can make it all the more exciting for viewers.
In conclusion, CFNM porn videos and pictures are popular because they involve a power dynamic, humiliation, bondage, and taboo activities. All of these elements stimulate arousal, making CFNM an exciting and popular type of porn.