He didn't address couples counseling and therapy as factors in keeping marriages going. There's always been marriage counseling; today it's a professional therapist you hire, but in the old days it was your priest/rabbi/minister, or perhaps an elder in your household, who advised you on how to get along. Today in First World industrial societies, couples just try to wing it, moving out from the parents' house as soon…
Inappropriately harsh position. A couple unable to conceive can easily have a meaningful life, even without going through the adoption path. It's just that having kids is the beaten path. You know from the onset the path all the way through. It is known what society expects from you and you feel happy fulfilling the expectation.
A childless couple must create a journey together. It's a different path for each couple, thus with higher risk. The good news is that higher risk carries higher reward.