Couples have very different experiences with NFP - I am so grateful that NFP has, at least so far, been fairly straightforward for NaturalGuy and I. There are so many factors that make NFP easy or difficult to use, and we're very lucky to land on the "easy" side of the spectrum.
Last week I read an article by protestant pastor Jonathon Parnell about "when the sex should stop" in a marriage. It's not written with NFP in mind, but it gets to the core of sex being about sacrifice for your spouse. Some months, the sacrificial aspect of NFP seems especially topical! And then I read articles about couples with truly grave reasons to postpone from sex, and I'm reminded once again of how lucky we are!