We're already joined. We're both moralizing idealists, but I have a legitimate reason to be so. You have no reason to have any more ideals or beliefs than an ant, yet you crusade for rational/humanistic ethics, which cannot be justified by an appeal to a meaningless coincidental world or the phyisical laws that allegedly make up the whole of reality. I mean, did Newton discover that it's "wrong" to "discriminate?"
Your practice needs to catch up with your beliefs.