We can learn from the mistakes of others - for example - without the history of Hitler and the Holocaust, we wouldn't have VOWED to NEVER let it happen again. Racial segregation - we will NEVER repeat it. NEVER be on the wrong side of history again - we look back and realise that we made mistakes, and move on, not to repeat them. History tells us who we were, and who we should either try or try not to be. We can MAKE history by doing new things, exploring and furthering ourselves more and more - making a better place (and granted, sometimes a not better place) for our children.
I thought about explaining why not religion but I do not wish to offend anyone. To put it as plainly and as respectfully as possible - Historically, religion has caused some of the things in history we do not wish to repeat - wars etc.
However, if you believe Religion is more important, then I acknowledge and respect your opinion on this.