Monastic life is NOT the foundation of the Church marriage and family life are. In fact, monastic life–like the Church itself–is modeled after the family.
This means that we need are strong marriages which in turn can be the foundation of strong families. And it is from healthy expressions of marriage and family life that we can have strong, healthy parishes, dioceses, local Churches and, yes, monasteries.
St Ignatius of Antioch is a help here:
Do not err, my brothers. Those that corrupt families shall not inherit the kingdom of God. If, then, those who do this in regard to the flesh have suffered death, how much more shall this be he case with anyone who corrupts the faith of God, for which Jesus Christ was crucified, by wicked doctrine? Such a person, becoming defiled, shall go away into everlasting fire and so shall everyone that listens to him (St Ignatius of Antioch, Letter to the Ephesians 16).
Simply put, we corrupt families and parishes, when we make monastic life the model for our life in Christ.
For a fuller explanation of this and for the rest of my talk: