The only problem with the natural law is that for folks who want to do what they want to do, particularly when it comes to matters sexual, it is an impediment.

Synonyms have never created an unstoppable barrier to human knowledge in the past.

Since it is interpreted through the Church, it is not personal opinion.

Since you’re a peon along with the rest of us peons, and the Church through the Holy Father is not, your assessment that “the person does not have an actual argument” is simply one of those personal opinions you take issue with.

Unless you are a "great ape" incapable of making moral choices, your last comment constitutes that blather you dislike.

After decades I'd work up some fresh arguments against Humana Vitae.