Why Phil From Sagamore Park Would Make A Great NFL Player...

According to the equipment guy for the Eagles, "The last player on the Eagles to use a cup was center Steve Everitt in ... 1999" Why would you not wear a cup when playing football, the most physically violent sport there is? Does it chafe when you try to run full speed? If so, then I can understand why the wide recievers, safeties and running backs don't wear them, since they get paid to run fast. But what about all the linemen? After reading some horror stories about what goes in the pile-ups that occur when ever there's a loose ball, I would think that everyone would be wearing cups, but I guess not. Here's a quote from Ben Leber, a linebacker on the Chargers about what goes in under the pile:

"I don't know if people really want to know what goes on down there: Basically
anything you can't get away with on the field, you can get away with under that
pile. Nobody can see you. The go-to spots are the eyes and the family jewels. If
anybody grabs your family jewels, you are going to let go. In the pile you hear
some screams of pain, but you don't know where it is coming from -- unless it's
you."

Are players too macho to wear them? I don't get it.