It's a combination of things. 1. They're told women can have kids later, and have no idea that the longer you wait to have the first, the harder it is to have any. 2. They're addicted to the attention from men, so they want to wait as long as possible before marriage/kids. 3. They don't understand that the wall is coming. 4. Men aren't looking to wife early, and sluts get the most attention (relates to number 2). 5. They fall for the lie that marriage and kids ruins/ends your life, so they should pursue a career.