You don't want any girls your age because they're just not your mother. They're immature, and worse they have shaved pussies. After getting a taste of mother's hairy pussy, you know you'll never want anything else. That big bush drives you wild with desire. Luckily mom is will to accommodate you & fucks you all the time. As you've grown your cock has gotten even bigger, and she can't wait for you to stuff it inside her.