NFP is a remarkably reliable way to achieve/avoid pregnancy without the use of chemicals or barriers during intercourse. Furthermore, NFP puts you so in tune with your body that you can identify problems very quickly. Name me a birth control pill that can do that.
I have 4 kids. I used NFP to both achieve (successfully within months) and avoid. In time my daughters will be carefully taught this method.
If I agree that your chosen method of pregnancy avoidance is reliable, can you not agree that mine is as well?
I agree that abortifacients are morally wrong, but God has allowed science in that area. Condoms, though not 100% effective, are not abortifacient nor contain harmful chemicals. I don't see what is morally wrong there. I fully agree that sexual intimacy should be between a husband and wife only, God gave this as a gift and the “marriage bed is undefiled” in his sight. It is not only for reproduction.