Contraception in Christian Marriage

Why is there a division in the church concerning the issue of contraceptives in Christian Marriage?

Sam and Bethany Torrode argue that the church needs to rethink the purpose of sex in their article Make Love and Babies
http://scottlenger.com/church-and-society-series/sam_and_bethany_torode_make_love_and_babies.pdf

Shaun Willcock provides scripture on the topic of contraception and Christian couples.
http://www.thebibleistheotherside.org/currentarticlep30.htm

Routledge explores the following three points concerning contraception: (1) whether there is evidence of the intent to prevent pregnancy and how it was viewed by religion and law; (2) what kinds of contraceptive knowledge were available; and (3) whether contraception was the concern of women only or also of men.
http://www.routledge-ny.com/ref/middleages/women/contra.html

Catholic News Agency quotes early church fathers on the topic of contraception
http://www.catholicnewsagency.com/resource.php?n=726

Todd A. Salzman and Michael G. Lawler explore marital morality and contraception in their book The Sexual Person.
http://books.google.com/books?id=p8nrAR3Oi1QC&pg=PA172&lpg=PA172&dq=contraception+augustine+of+hippo&source=bl&ots=GO6cKMJ62z&sig=iq9JKuxCqNKf7pya8CQSc8D_avI&hl=en&ei=P9LxSpa6CMTBlAeS8OW8Aw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CAsQ6AEwAA#v=onepage&q=contraception%20augustine%20of%20hippo&f=false

Explaining a brief Church history of contraception and supporting the use of contraception in Christian marriage.
http://www.christiancontraception.org/foreword.php

Janet E. Smith discusses Contraception and America's culture
http://www.janetsmith.excerptsofinri.com/

Rep. Carolyn B. Maloney ( D NY) discusses political and cultural views on contraception
http://www.jewsonfirst.org/05a/repro026.html