Social change is a complicated phenomenon. It is weird. Because it brings in its wake an erosion of values you’d have liked to preserve. It is frightening. Because it doesn’t move an inch the system you wish to wipe out.
Why does a society cling so stubbornly to cumbersome, decadent customs while losing grip on norms tangible and functional? Does this show a deep malaise, a tendency towards self-destruction?
Perhaps it does. I see no other explanation of the almost pathological perseverance and archaic glorification of the customs that go with marriage.