So, you would disagree that the three most basic human instincts are food, shelter, and reproduction?
If I sleep outside, I am not immoral in doing so. If I fast, I am not immoral in doing so. If I abstain from sex, I am not immoral in doing so. I can and often do give up something “good” for something
better. That’s what “mortification,” “fasting” and “continence” is all about, no? It is not that the Church is against eating, is it? No. It is that we can and do give up something good for the strengthening of our spirit.
St. Paul, for example, explained that he “pummeled” his flesh in order to strengthen his spirit.
1 Cor 9:27 - “I pommel (Gk
hupopiazo) my body and subdue it, lest after preaching to others I myself should be disqualified.”
Hupopiazo means literally, to beat black and blue that part of the face which is under the eyes, much like a boxer does to discipline himself. Giving up that which
is good helps to discipline ourselves in order to strengthen one’s spirit (
something better)
As was stated above by Fr. Kelly, the way to determine whether one is acting immorally with regard to “omissions” of certain moral acts pertains to whether or not one is
neglecting an obligation, a duty. Only married couples have a duty to procreate for the generations and sustainment of human life. And,
not all must marry and procreate to sustain the family, the Church, the society, or mankind.
With regard to shelter, food, and sex…
Am I obliged to sleep indoors? Only insofar as it is necessary for protecting my life. Am I obliged to eat? Only insofar as it is necessary for protecting my life. Am I obliged to procreate? Only insofar as it is necessary for protecting my life…wait a sec…contrary to popular belief, lack of sex will not kill me.
Let’s then look at our
obligations to others. Is every person required to procreate in order to sustain the family? The Church? Society? No. Only those who marry have an obligation to procreate. However, any positive obligation can have justifying excusing causes which dispense from the positive obligation.
We cannot do what is evil (contraception). However, we can have justifying causes for abstaining from what is good (conjugal sex), for that which is better. For example, let’s say after two children, my spouse gets into a car wreck and her injury is such that she can no longer have conjugal sex. Should I affirm my right to have sex with her in order to continue to have children, or perhaps is their “just reasons” for abstaining from that which is good–sex–for something better–love.
“Responsible parenthood” is something the Church teaches, and it does not include the obligation to continue having as many babies as is possible.
See more here:
What is the morally correct level of children?