Even with Natural Family Planning, the reasonings behind birth control are still the same whether "natural" or "un-natural". Birth control is the attempt to control the procreation and prevent God from creating when He pleases. Whenever we try to reinvent the wheel in family planning we end up causing more harm than good. There is so much relief and peace in just letting God do what He does best...create life at His whim. :) I would hate to try to plan when or if I should have another...and then schedule my love life around all of it. Too much stress for a marriage!