Women at the bottom are generally desperate and horny, and so even if they want to try and filter out players their ability to say no to someone slightly out of

Women at the bottom are generally desperate and horny, and so even if they want to try and filter out players their ability to say no to someone slightly out of their league who is being affectionate is pretty limited, so they will lie to themselves with thoughts like "this time will be different" and "we really like each other." Dating sites also disincentivize most people from being honest about what they want in their profile, since women who state that marriage and children are a must and men who just want sex both get way way fewer views and contacts than people with more open interests. As a result, people tend to keep their interest "open" with the idea that they'll "convert" the person to their desires after they start dating.