My understanding is that marriage, family and true friendship are derived from eternal reality.
These are not merely earthly inventions or expedients or means to desirable worldly ends - they are not merely the source of analogies for our understanding of Heaven... instead these fundamental relationships of marriage, family and friendship are a product of our pre-mortal personal experience of ultimate reality.
(They may also be a product of direct divine revelation.)
Marriage, family and friendship are eternal forms, eternal templates - their existence on earth is in (albeit imperfect, incomplete, partial and distorted) conformity with the basic metaphysical structure of everything.
To rebel against the ideals of marriage, family and friendship - to subvert, attack and invert these relations - is therefore to deny reality and join the revolution on the side against against Truth and Good.
It just is - one way or another - to adopt destruction as the primary goal and ethic.
Not a small matter...