I was very moved by what she wrote, and was going to leave a long comment. Instead I'll just blog my thoughts here. :)
Trav and I have 4 kids, our first was lost to miscarriage, a 2 yr old, an 8 mo old, and I'm 6 mo preggo.
My husband and I DO practice NFP, just maybe not very "well". (har har) We were able to use it successfully to achieve our first two pregnancies, and to not achieve pregnancy for awhile after the miscarriage.
After our firstborn I was too tired to chart and conceived our 8 mo old while we were "recklessly having sex", as I jokingly say. The baby I'm carrying now was conceived P-6. (For those not up on their NFP jargon, that's 6 days before peak day, which is the most likely day of ovulation. It is technically within the realm of fertile days, but usually sperm only lives 2-3 days in a fertile woman.)
We feel like God is blessing us abundantly, but I also feel very strongly that this is MY path to sanctification. There are a lot of crosses to be carried every day, including the cross of knowing that other women would trade everything to be in my place. When Lydia whines while Bennet fusses, or when the naps just don't seem to want to happen, or the poopy diaper leaks all over the entire outfit I just put on the freshly bathed child I sometimes
At the risk of being redundant, I want to be perfectly clear: my children are enormous blessings. It is the craziness, physical pain, exhaustion, frustrations, etc. that come with them that are the crosses.
Of course there is a difference in the crosses borne by those who are infertile and those who are super-fertile, but we all should be mindful that God opens and closes the womb as He sees fit. I have experienced infertility through the loss of Peter; I am currently in a "super-fertile" stage. Yet I am very aware that while we may have more children, we may not. Kaitlin at More Like Mary - More Like Me said it beautifully when she wrote that children are ONLY gifts and they are ALWAYS gifts.
Oh Mother Mary, St. Elizabeth and St. Hannah - pray for us!