Back in the days it was humane to make many children because most of them would die. Today it may be more humane to make only a few but to invest more time into each.

If you like to define humanity as an ideal, or a process, or a goal, or some other such, then it becomes much more of a spectrum.

All that said, anyone who does think in terms of binary when it comes to humanity needs keeping an eye on.

For any definition of "human" that is objective and universal, yes.

If you swore fealty to the wrong lord, worshiped the wrong god, were born into the wrong clan, ethnic group or state, you were considered something less than human. And of course, nobles claimed descent from divinity, making them more than human.

The concept of a common humanity with inalienable rights is relatively modern and in many places still controversial.