Don't Judge a Book by It's Cover

I don't understand why everyone is so judge mental. We are all the same. We are all human beings. Life isn't fair and that is never going to change. But why should we judge everyone? It doesn't matter what color your skin is, what religion you are, what you wear, or how much money you have. If we could all look past that and see what is truly inside. Everyone would be happier and life would be amazing! It's just like the saying Don't Judge a Book by it's Cover. Don't judge people by their outside appearance.