I completely agree. And I too, have the annoying trait called empathy, it costs me a lot of money and sometimes gets me in trouble. Furthermore, I observe that many atheists, though they deny a divine source of morals, do in fact have good morals -- better than a lot supposedly religious types.
However, empathy is a mere emotion, a personal preference, that is NOT SHARED by large numbers of human beings. If it were universal the world would be a much different, better place. Since this personal preference is not universal, how do we deal with those who lack it? We, hopefully the majority of mankind, impose our preferences by force on the unempathic. We prefer not to commit or suffer murder,rape, robbery, etc, so, we use our power to prevent or sanction such activities. Fine so far. But it's still only preference and power... what RIGHT do we have, absent a transcendent moral authority?
a lot of societial functionality reasons that would take too long to explain).
Feel free to explain them. I'm listening. However, first answer the root question: WHY should society be functional? Or exist at all? To preserve the human race? But why should humanity be preserved? Give me reasons OTHER than your personal preference, or the personal preferences of a 51% voting majority.
I believe that until a certain age it is impossible to fully give informed consent to sex. I also believe that until a certain age sex can lead to developmental disorders and in some cases physical harm (whether intended or not). Those would satisfy 2 and 4.
Again, I completely agree. But, once again, in the absence of God, that's just a personal preference (not harming children) that you and I happen to share -- and others, unfortunately, do not.