Just wait for the pendulum swing. Modernity has a real under appreciation for the value of the institutions that naturally arose within almost all human societies.
Sometimes the time for a thing has passed. Sometimes the genius of a thing is only appreciated in its absence.
Maybe modern marriage is mostly useless because people are quick to head for the exit, instead of feeling a sense of loyalty and responsibility to their partner. Without that, I agree, it’s not much of a partnership.