Or for that matter, why is altruism "better" than selfishness?
Ok, where does altruism come from then?
Altruism and kindness are essentially the same thing. So they are saying kindness comes from kindness. We call this begging the question.
Exactly. And why is altruism "good?" If as they want, I am simply relying on my own subjective knowledge and judgements, there certainly is no objective standard of "good." Why would an atheist even make an appeal that there are knowable standards of good (and therefore, evil?) It destroys their entire argument.