We are using NFP. It's been so different this time I think because we feel much more strongly about waiting After L was born we wanted some space but we knew we wanted another baby not too far down the line. We avoided until she was 15 months old then decided to go for it on a whim and baby J was conceived (I was not cycling for nine of those months though).
But this time I do not feel that desire for a baby. I don't know if it's due to exhaustion or what, but I know that I feel no pull towards adding a third child. And it feels very un-Catholic, with my scrupulosity kicking in that is. A feels the same. I realize we have good reasons to postpone for now, but currently I want to postpone forever, and I feel bad I feel that way (oh what a tangled feeling web...).
My guess is that this wish to stop is due mostly to the craziness of the last few years. The last four years have been incredible for us, full of so much joy. But the amount of change we have gone through is insane--moves, engagement, babies, marriage, several job changes, extended family drama. I feel a bit dizzy thinking about all of the changes in our lives, especially considering that six years ago A and I had not even met, and I was just a college student living in a dorm, studying English. Just a year before that I was a community college student living in my parents' house. So I'm sure much of our apathy towards having more kids is because it has been so nice these last few months (since A got his new job) not having any major changes on the docket. We've finally had time to actually pay attention to our own health, and to bettering our relationship. We've gone on dates, started working out, done some house projects, and spent lots of time with our kids. So the idea of seeking pregnancy right now sounds absolutely terrible. I don't mean to offend anyone struggling with infertility, and of course if we somehow got pregnant now we would love the kid to death. But I am of the very firm persuasion that I can't really love someone who does not exist (once that person starts existing then I am so there).
Anyway, so this determination for some time to adjust to all the many changes in our lives has helped us practice NFP fairly well, for us anyway. We are only a few cycles in, but we made it through the completely awful post postpartum transition which is a huge victory.
But as I said above, I feel very not Catholic about it. I don't want to be open to pregnancy again, and a part of me feels that is not acceptable. The way I grew up we learned a touch of providentialism, so I struggle to realize that we are not required to have as many kids as possible. And currently I am feeling so excited to see our kids get older. I am loving seeing L as a kid rather than a baby, and getting to have conversations with her. I want to keep growing up with our kids, not get plunged back into the newborn days over and over again. A is much less scrupulous than I, and says that as long as we strive to follow Church teaching regarding NFP we can make our choices. I, on the other hand, am having a hard time shaking off the 'must have big family' mentality, plus I worry about our ability to practice NFP long term. I hope to expand on this more later, but as of now I am still a bit internet shy.