Endorsing slavery, and ethnic cleansing, including infanticide, torturing a newborn baby to death over 7 days because it was conceived in an adulterous relationship, indiscriminate and relentless murder, including a global flood and genocide, advocating sex trafficking female prisoners, etc etc etc, maybe love means something different to you than me?
You are familiar with Woke ideology, animal rights and other secular 'values' ?
I could imagine an age coming when it will be illegal to ride a horse as it's 'cruel' and 'violates animal rights.'
And people will look at the biblical story of Jesus and the colt and say, 'I don't follow a book that condones the riding of animals.'
(let alone animal sacrifice, beasts of burden, eating meat etc..)
This stuff about 'endorsing' slavery is called PRESENTISM, comparing the past to the present. I imagine that people back then, seeing a world where half the kids come from broken homes, the proliferation of drugs, mass shootings, transgender politics, atomic warfare and the things listed in my profile - would condemn our age as we condemn theirs.
I do not live under the old Jewish law of the Old Testament. The doctrine of Christianity is laid out in Matthew 5,6 and 7. And the Christain attitude to slavery is given in Paul's letter to Philemon.