All these different religions throughout time seemed to come eventually to the same thought of practicing certain dramatic rituals or representations of what they believe to be the past. My question is why did these religions come to the decision that during festival times or certain specific days they should be performing certain things?

I know the readings mention that it was to give the public a chance to be involved but I think if you are of a certain religion you have the ability to worship and be a part of your religion either at a place of worship or in your home so what other reasons could have been behind the decision?