In truth, they also find this service approach from men quite enjoyable. It offers a greater sense of security than the phrase "I have connections above," though they may not fully understand why.
Simply put, the reasons boil down to at least the following points. Feel free to compare them:
Primitive Memory:
Before our ancestors walked upright, their sexual acts involved embracing from behind. In other words, our collective unconscious harbors this animalistic instinct—an innate preference. The more "animalistic," the greater the pleasure. You must admit the animalistic tendencies inherent in sexuality.
Conquest thrill:
The smooth conquest thrill—this is the bold cavalry spirit many men crave. With her in front, defenseless, he can explore freely. There's no sense of competition, only his direction, his thrusting, his riding, pushing her toward his climax.
Novelty:
Men are creatures who crave novelty. Thus, the unconventional "face-to-face" position feels magical, fresh, and alternative—making it particularly thrilling. When changing partners isn't an option, switching positions offers a satisfying alternative.
Hero Complex:
Men crave the satisfaction of claiming what they desire and love, fulfilling a territorial instinct akin to a hero dominating his domain.
Butt Obsession:
Men harbor a strong fixation on buttocks, evidenced by clubs like the "Butt Lovers Society." This explains why women flaunt their curves—supply follows demand.