I’m going to offer my explanation to blacksword, the OP, and whoever else stuggles with this.
Let me preface by saying, I am an atheist but after much research, discussion, and thought, I understand it now so don’t give up hope that you will too some day!
Interestingly enough, the thing that got through to me, the thing that made the light bulb go off in my head :newidea:, the thing that made it all crystal clear to me was…reading the Jewish teachings on contraception! It was actually a :doh2: kind of realisation.
Weird, huh? Let me explain.
I find the Catholic teaching full of mumbo jumbo and confusing phrases. Open to life doesn’t mean what I think it means. Unitive and procreative are odd words that are often misunderstood. Ordered to procreation is a strange way of wording it. Those phrases threw me off. So forget that for now, and let me tell you what the Jewish teaching is, it may help you understand the Catholic teaching (though they are not the same).
“The option of contraception is raised by the Talmud (tractate Yevamot 12b), where the use of a pessary is discussed for women who are too young to get pregnant, presently pregnant, or nursing. In each case, either the woman or her child is at risk for serious complications, and this is the basis for many rabbinic authorities permitting contraception in situations where pregnancy would seriously harm the woman.
In those cases, the most “natural” method is preferred; as the use of a condom or pessary creates a physical barrier, “the pill” (or an intrauterine device) is preferred by most authorities.”
When I read that…I was like…oh…duh! It’s not really about the intent of the couple or their ability to procreate. It’s about how they have sex.
Now wait a minute you say! How is sex on the pill or with an IUD natural? Well it’s not exactly but it is in the sense that the
act is not changed. If you did not know a person was on the pill or an IUD, you would not be able to tell they were contracepting by watching them have sex because
the sex itself is unchanged.
I would say as an atheist, Nature/evolution “designed” sex to be a certain way. (Just replace nature with God). Am I right, or am I right, that sex feels best when performed to completion inside the woman without a condom? (I am a woman and I think so!) There’s just something…not ideal…about barrier contraception. It’s like nature (God) did not mean for sex to be done this way. (propagation of the species anyone?

) And how intriguing, that the most fertile time of the month is when I have the most desire and have noticeable changes in my body. Hmmmm…it’s as if…SEX WAS DESIGNED TO MAKE BABIES and nature (God) ensured this by making sex feel best when done normally!
Now, you have to dig a little deeper into Catholic theology to go from Jewish rules to Catholic rules. But the root of the issue, the basis that both teachings are founded on, is that God designed sex to be done a certain way. It was designed to be between a man and a woman, yes? Yes I am sure you would agree. Sex was designed to be between a man and a woman and to be done in a way that will propagate the species…I mean bring new blessings into the world as the natural fruit of love

and nature, or God, saw fit to add little details like increased desire during ovulation and increased pleasure when performed without a barrier, to make it clear that this is “the way sex is supposed to be.”
So now you know God’s plan: have sex in a way that does not impede conception.
Now you ask, how does NFP not thwart God’s plan? NFP does not thwart God’s plan because you are not actually changing the sexual act itself. What you do in the morning with that thermomemeter and what you do with that ovulation test kit, what you do with that calendar and chart, is up to you. Don’t have sex. Have sex. Up to you.
You don’t change the sex act itself by monitoring fertility. God intended sex to be a certain way. And in all His wisdom, God
designed sex to be most bonding and best feeling when done this way so that people could detect His plan that this is the way it is supposed to be.
So my suggestion is: read up on [Orthodox] Jewish teaching. Reading up on evolutionary aspects of sex couldn’t hurt either. And just think about it. Pray if you want. Think about what you feel when you have sex, and what feels best. You will see that the perks of non-contracepted sex indicate that sex - each and every sexual act - is supposed to be done in a way that does not deliberately
alter the act. Do it the way nature intended. Because that’s the way God intended.
Yeah I got my dissenting opinion all right. I am strongly in favor of using contraception. (Must be that irreligious antinatalist atheist in me

) but I do understand why the Church teaches what She does and you can too.
Hope this helps.