A pillar of the Catholic set of laws is its understanding of
natural moral law, which addresses laws that aren’t written but nevertheless known by all men and women who have the use of reason. It uses basic common sense, prudence, and justice.
Moral law is
natural because it’s known by reason — not written in stone or on paper, like the Commandments or the Bible
. It’s
moral because it applies only to moral acts — actions of human beings that involve a free act of the will. (It doesn’t apply to animals, because they don’t have the use of reason.)
Catholicism and Natural Moral Law - For Dummies
I. THE NATURAL MORAL LAW
1954 Man participates in the wisdom and goodness of the Creator who gives him mastery over his acts and the ability to govern himself with a view to the true and the good. The natural law expresses the original moral sense which enables man to discern by reason the good and the evil, the truth and the lie:
The natural law is written and engraved in the soul of each and every man, because it is human reason ordaining him to do good and forbidding him to sin . . . But this command of human reason would not have the force of law if it were not the voice and interpreter of a higher reason to which our spirit and our freedom must be submitted.5
1955 The "divine and natural" law6 shows man the way to follow so as to practice the good and attain his end. The natural law states the first and essential precepts which govern the moral life. It hinges upon the desire for God and submission to him, who is the source and judge of all that is good, as well as upon the sense that the other is one's equal. Its principal precepts are expressed in the Decalogue. This law is called "natural," not in reference to the nature of irrational beings, but because reason which decrees it properly belongs to human nature:...
Where then are these rules written, if not in the book of that light we call the truth? In it is written every just law; from it the law passes into the heart of the man who does justice, not that it migrates into it, but that it places its imprint on it, like a seal on a ring that passes onto wax, without leaving the ring.7 The natural law is nothing other than the light of understanding placed in us by God; through it we know what we must do and what we must avoid. God has given this light or law at the creation.8
Catechism of the Catholic Church - The moral law
How is this "badly flawed"?
The Church is not against gays. That is a myth propagated by Gay Marxists. The Church's teaching is very compassionate and reasonable, for those who bother to find out what it is. There are lots of gays in the Church. What the Church is opposed to is doing gay things. It's wrong because it's against the natural order. You can argue all day about the <1% born with genetic dispositions, but some alcoholics can also be born with a genetic disposition to alcoholism, but that does not mean we should endorse them to consume unhealthy amounts of alcohol.
Claiming homosexual behavior is harmless is not realistic.
Homosexuals of both sexes remain fourteen times more likely to attempt suicide than heterosexuals47 and 3½ times more likely to commit suicide successfully.48 Thirty years ago, this propensity toward suicide was attributed to social rejection, but the numbers have remained largely stable since then despite far greater public acceptance than existed in 1973.
Study after study shows that male and female homosexuals have much higher rates of interpersonal maladjustment, depression, conduct disorder, childhood abuse (both sexual and violent), domestic violence, alcohol or drug abuse, anxiety, and dependency on psychiatric care than heterosexuals.49
Life expectancy of homosexual men was only forty-eight years before the AIDS virus came on the scene, and it is now down to thirty-eight.50 Only 2 percent of homosexual men live past age sixty-five.51
Male homosexuals are prone to cancer (especially anal cancer, which is almost unheard-of in male heterosexuals) and various sexually transmitted diseases, including urethritis, laryngitis, prostatitis, hepatitis A and B, syphilis, gonorrhea, chlamydia, herpes, and genital warts (which are caused by the human papilloma virus, which also causes genital cancers).52 Lesbians are at lower risk for STDs but at high risk for breast cancer.53
Homosexuals of both sexes have high rates of drug abuse, including cocaine, marijuana, LSD and other psychedelics, barbiturates, and amyl nitrate.54
The footnotes refer to professional medical and social journals, if you check the link.
Gay Marriage | Catholic Answers
You will never see this information in the media or in schools, because facts can be classed as hate speech in some places.
Courage is an international apostolate of the Catholic Church, which ministers to persons with same-sex attractions.
Courage - Courage
