I think prayer before games is something that shows people around the world that even though our society is like it is today, we still have something that we can do to show our beliefs and values. If you have problems with it, you should ask for a different activity during that time. There are more people in my school that do wish for prayer than do not. It should be up to the individual school. The pilgrims came to America seeking freedom of religion, we should base society on that concept.
Some people pray to different gods or objects than others.
So instead of the whole school praying to one specific object, everyone can pray to whatever they pray to without any chance of prejudice being roused.