Do you have a persecution complex or just a poor self image? I don't despise you. Because I don't follow your reasoning or think your caricaturization of Christians is misinformed does not mean I despise you. Your value as a human does not depend on your personal positions. Christianity teaches the intrinsic value of human life primarily because the imago Dei. Contrast that with the atheistic belief that we are only evolved animals. There is no basis for intrinsic value in that system. Peter Singer, for example, thinks we may be of less value than other forms of life.
Of course there is. We're human beings, regardless of how we came to be human beings. That is the basis of all morality - the necessary conditions of a thriving life, given the facts of human nature.
I could just as easily ask you: Why is it so important to your self-image to know who your very distant ancestors were? Don't you have any self-worth on your own?