In his book Ethics: Approaching Moral Decisions Christian philosopher Arthur Holmes offers that, outside of marriage, the realm of choices for interaction are quite endless. The advent of the pill, for example, modified the behaviors of many single people who now saw how simple it is to have intercourse without consequences. Additionally, the woman's liberation movement and other social paradigm shifts related to gender began to re-define the idea of marriage, parenthood, conception, and the rights that we have over our own bodies.
It is precisely in that particular issue what Holmes reaffirms his idea that
sex, for individualistic ends can be a manipulative, chauvinistic and destructive power play that ignores what justice and love may require.
These words serve as a form of warning towards all of those who choose not to follow the social expectation of marrying: if you choose not to marry, then you are open to the possibilities of falling into the empty temptations of an overly-liberated world.
To better understand his premise, it is necessary to be attuned to Holmes's philosophy. In Holmes's philosophical approach, marrying is not the union of two people for the purpose of procreation; it is also a communion with God that is basically mandated by those who practice the Christian faith. Hence, being unmarried means, in Holmes's mind, that you may fall from what he calls a "rationally ordered society" and miss out in a stronger bond with God.