If someone does not share with others then others will not share with them. If someone does not care about anyone else and only cares about themselves people will slowly stop caring for them. When I was little my brothers always shared their toys with me but I never shared my toys with them. For example I had a little tractor and I would never let my brothers drive it they would always have to ride in the passenger seat. Soon after that they got a new cool tractor and I had to ride in the passenger seat and watch them drive it. That is why I think people should treat other people the way they want to be treated.