you present a well reasoned response to the social ills in today's culture. As you rightly state it is abortion, homosexuality, and contraception that contribute most to the break down of the family system. I would add divorce to that list as well.
I too believe that we need to return to teaching Natural Law in our educational systems. The recognition and acknowledgement of the existence of Natural Law , that law that is written on every man's heart, would go a long way toward protecting the inherent rights and dignity of all human beings from conception until natural death.
The family structure of one man and one woman and any children born into that family unit is a part of the natural order, ordained by our Creator, who is the author of all life. It was in Genesis where God Himself instituted the sacrament of Holy Matrimony.
When this basic family structure is recognized and promoted as that which is most conducive to raising happy, well adjusted, morally and financially responsible adults, all of society benefits. The result is law abiding citizens, health systems that focus on the promotion of wellness versus one that must constantly battle disease that results from illicit sexual lifestyles, i. e. Sexually transmitted diseases, which only one short generation ago were non-existent. The emotional and mental health of citizens in modern society which continually denies the existence of the Natual Law has suffered as a result of this lack of a moral compass.
However, when one lives with the knowledge that moral principals do not depend upon a majority vote and wrong is wrong even if everyone is wrong and right is right even if no one is right then one is truly free in the truest sense of the word.
In a moral society, one guided by moral principals, these principles will be passed down through one generation to another, and in conclusion, it is the family structure that contributes most to the overall good of the entire community. And thus must be protected by our civil laws at a minimum.
I agree that we need a "defense of the traditional family" as we engage in the current culture wars of modernity.