Why?

I decided that since I have no fun stories to share because I live a boring life, I'm going to ask really pertinent and thought-provoking questions.

Please refer to my picture from the previous post: the one where the soccer player is getting OWNED by a soccer ball (futbol or football if you're an international reader, of which I have none).
As you can see from the picture, the ball and the man's face are in a fight. That's a pretty rare event actually. You usually use your head on purpose. That said, I did hit a kid wearing glasses in the face during a high school soccer game. I made him bleed, cracked his frames in half. The jagged, cracked frames cut him right between the eyes. It only bled a little though; he lived.

My question though, is: Why do soccer players not wear cups? Baseball players, lacrosse players, and football players wear cups. Why not soccer players? If your face can get smashed like that, what's to keep your package from enduring the same treatment? I find it odd, that's all. I have seen some close calls/direct hits in person. I just think safety precautions should be taken. Think of the children. Some kids start playing in recreational soccer leagues as soon as they can run around. Think of the children! Children are our future.