Re: Why is "Natural Family Planning" ok when other contraceptive methods are not?
Contraception 'corrupts' individual acts of procreation, and as such corrupts the human reproductive process.
NFP 'corrupts' the human reproductive directly.
So, by using lambasting contraception for corrupting the individual acts, you can keep NFP.
Edit- since you appear to be a potential convert, I'll let those 'inline' with Church teaching do most of the talking, unless you request more information from me.