I belong to some natural family planning groups. They're generally Catholic groups and only advise doing church sanctioned methods of avoiding pregnancy.
The other day, someone started an OT thread about wedding planning and it pissed me off so much to see the same people saying that they only do what God wants them to do advocating for A and B lists, tiered receptions and splitting up social units. One bride to be mentioned that she will only invite both halves of a couple if she and her FI like them.
I really want to yell, "Do you really think that God is cool with you treating your guests like crap???"