The big question here, in a purely secular context, is what is it that makes us human?
Does human life have a biological purpose? Does anatomical function define this?
Sexual reproduction defines us as a species in the natural world. Natural selection and evolution are totally dependent on this. To do otherwise makes you less human.
Animals will defend their young with extreme violence, something too many humans do not observe.
I think what makes a person fully human is how they love and raise their children. Not doing this makes you less human...
"I think what makes a person fully human is how they love and raise their children. Not doing this makes you less human... "
So I guess that means that millions of childless couples are also "sub-human" in addition to all the heterosexuals who practice oral sex and sodomy.
Excellent observations. I especially like this point:
"Animals will defend their young with extreme violence, something too many humans do not observe."
Up to and including slaughtering them. How far humans are, sometimes, from the nature they are meant to embody. The downside of free will.
Not always. Plenty of animals eat their young.