Short answer, my health and the sanity of both me and my husband as well as the proper instruction of our existing children.
Long answer,
My husband and I always felt very strongly that God’s wisdom and timing would be better than ours (duh, right?!) We also decided early on that if we ever felt that we had grave enough circumstances to warrant NFP we would consult a good, solid priest, not to get his permission so much as to have that extra accountability to ensure that we would never allow our consciences to become lax and start rationalizing. That being said, we recently arrived at the place that we never thought we would in feeling the necessity of preventing for a time.
I’ve had 10 pregnancies in 12 years, two of which were miscarriages. For years we have been living well below “poverty level.” Our oldest child is exhibiting behavioral issues that I was not equipped to deal with while suffering from pregnancy exhaustion. My body during the last pregnancy was so worn out I could not stand for even one minute. I had to pull a chair over to wash dishes at the sink. We decided near the end of that pregnancy that we should take a break, for the sake of my body and our existing children and also my husband was feeling very overwhelmed by his responsibility to provide and by the aforementioned behavior issues. We agreed on a plan to get my body stronger and to address the issues with our son in a certain time frame. I consulted a very solid priest, a traditional one even and he agreed that we had sufficient reason and also reminded us that NFP is only ever meant to be temporary, for as long as the circumstances exist.
After baby #8 was born I had serious complications that brought this to a new level. I think without the complications we may have changed our minds as we’ve always felt very strongly about leaving it totally out of our hands but I had blood clots in my lungs and nearly died. I then had to be on blood thinners for 6 months. The medication I had to be on is know to cause horrible birth defects and miscarriage. Now any future pregnancies I will be high risk and have to do daily injections of blood thinners throughout. The injections can cause osteoporosis and my bone density is already below the normal range. So, we are taking this as a confirmation that we need to have a sacrificial time to practice some prudence and self-control. We are planning on practicing NFP for a couple of years to regain my strength and in the future to limit the overall exposure to the injected meds (maybe 4 pregnancies over the course of the next 10 years vs a potential 8 pregnancies over 10 years.)
Anyway, there’s my novel!