Sex seems to promise so much. Skin aflame with unbearable bliss. Sobbing embraces of vulnerable rapture. Transcendent merger as utter oneness. But usually, sex is fairly mundane.
Men get hard, pump and grunt, squirt out their tension, and relax.
Women get wet, moan and hump, seize and weep, and snuggle in warm comfort. At first exciting, sex can become quite predictable. Even good sex can become standardized. In this way, sex is like the rest of life. It's actually less than you hoped.