Reddit reviews Sex au Naturel: What It Is and Why It's Good for Your Marriage

Sex au Naturel: What It Is and Why It's Good for Your Marriage, by Patrick Coffin

http://www.amazon.com/Sex-Naturel-What-Good-Marriage/dp/1931018588

The method of achieving any purpose matters. Your problem is that Couple A wants to delay children, and they use method 1, while Couple B wants to delay children, and they use method 2. The methods matter.

Couple A wants to satisfy their kids' hunger, so they work hard and buy healthy food. Couple B undernourishes their kids with cheap, unhealthy food and work less hard. Couple C steals the money to buy the healthy food. Couple D abandons their kids with grandma and grandpa. Even though they have the same intention, method matters.

There's no sin in the intent to delay children. There is sin in the permanent, irrevocable intent to not have children any more.

There's no sin in abstaining from sex to avoid conception (which is how NFP works). There is sin in altering sex acts to divorce them from their God-given nature.

I recommend Sex Au Natural or Contraception Why Not.

You might come to the conclusion that contraception is fine, but the methods do make a difference. They might both be fine, they might both be sins, or they might be one and one. But they make a difference.

Regarding question 1, I recommend this book