Marriage (and the parenthood that is naturally built into it) is designed to make us into the image of Jesus Christ, chipping away at these hundred or so defects, building up of this or that human virtue, etc.

Up the inclined plane with Jesus at our side, nourishing us with the Sacraments. 

It takes spiritual energy (and faith, hope, and love, and grace) to take mere marriage from a cure for concupiscence (see St Paul's writings) into a lively re-presentation of the life of Christ in us/our spouse, overflowing with new life. 

A continuous and happy life of humiliation, self-emptying.   These words won't make sense to most people here. 

The Church should begin teaching again how to take good marriages and make them great marriages, spreading joy and peace into neighborhoods and extended families.