"In the pagan Greco-Roman world, it was taken for granted that men had
the right to expose a newborn baby for any reason, or even no reason."
Like today, women were mute, incapable of speaking. They couldn't argue against infanticide or in any way petition their husband.
They were also, like today, incapable of asking a man not to infanticide before they married him. Because, as above, women are mute.
Incapable of speaking.
Restricted to animal grunts, like beasts. Worse than beasts.
It's perfectly logical, see?
America respects women. It gets it from Christianity.
P.S. The man pays for the baby and therefore the baby is the man's property, end of story. Anything else is irresponsible.