I don't inhabit an essentialistic, substantialistic metaphysic or buy into the very presuppositions of an aprioristic, rationalistic, deductivistic, infallibilistic, rigoristic, legalistic, biologistic, physicalistic, reductionistic moral philosophy with its sylly syllogisms. 

A more dynamical, process approach probes divine & natural law, also, inductively, fallibilistically, holistically, with a social-relational responsibility model gifted by a robust personalism. Life's deepest mysteries defy classically defined essentialisms but require cluster concepts, which include both vague (overdetermined) & fuzzy (underdetermined) conceptions.

As such, honoring the depth dimension of the imago Dei, a radically social reality, the procreative is much more broadly conceived in both physical & spiritual terms. Openness to life refers not only to acts but to relationships & the manifold & multiform ways they nurture, sustain, affirm & foster flourishing human persons.