Marriages in England and Wales are on the decline, specifically heterosexual marriages. The rate goes significantly lower when one factors in marriages that had a religious ceremony attached to it.
We now have a case study in the “West” to see what happens to societes who lack a traditional marriage a, by extension, family structure. This is not a case of different forms of marriage co-existing with traditional heterosexual marriage, this is a case of heterosexual marriage becoming something of an endangered species, and thus no longer a primary driver of institutional forming in society. What happens when you remove that equation from a complex civilization that has the power of artificial intelligence and drones that kill autonomously at its disposal?