GodisGood77 said:
“the acceptable reasons for avoiding a pregnancy have loosened exponential over the past 100 years.”
Is it really true that 100 years ago, the Church had very well-defined teachings with regard to “serious reason”? (100 years ago, of course, that would most likely have meant total rather than partial abstinence.)
We had a long thread a few weeks ago with a lot of quotes from documents flying around, and as I recall, even the Address to Midwives (1951), offered fairly broad guidelines:
“Serious motives, such as those which not rarely arise from medical, eugenic, economic and social so-called “indications,” may exempt husband and wife from the obligatory, positive debt for a long period or even for the entire period of matrimonial life.”
papalencyclicals.net/Pius12/P12midwives.htm
I have to say that “medical, eugenic, economic and social” covers an awful lot of ground.
“The number of children in Catholic families, including those using NFP for birth control, has decreased significantly over the past 100 years”
The number of children necessary to ensure that the average couple will have at least one child survive to adulthood has been falling and falling.
It’s an interesting fact that today, the average number of births per woman in a developed country required to support a stable population is only about 2.1. That’s the break even we need to keep the population from spiraling down. Meanwhile, in some developing countries, the number is 3.4.
en.wikipedia.org/wiki/Sub-replacement_fertility
So, depending on local circumstances, you might need dramatically different birth rates to keep the population from going into a death spiral.
Here’s a chart showing mortality during the first year of life during the 20th century:
fasttrackteaching.com/ftap/TE-S7-P09&10.html
In 1900, something like 140 out of 1,000 babies died during their first year of life in the US. And that’s just the first year.
“There is no difference in intent between a couple using NFP and a couple using ABC - diminish the chances of pregnancy”
There probably are additional differences, for instance that the NFP couple probably also desires to be faithful to Church teachings and is willing to accept self-denial and to develop patience.
“I do not get NFP being acceptable when other forms of birth control are not”
The mechanism that makes NFP work is abstinence–that’s why it is acceptable while ABC is not.