The issue is not, as one revisionist author argues, whether procreation is required for a marriage to be valid.4 The issue is whether marriage—by nature, by design, and by aim—is a covenant between two persons whose one-flesh commitment is the sort of union which produces offspring.
so God cares more about if the 'plumbing' fits together? why? how does this serve him? just because it's the design he chose?
