We knew that artificial birth control would lead to the break down of the family and the collapse of sexual morality for quite some time - especially since 1968:
http://www.nd.edu/~afreddos/courses/264/popepaul.htm
the rate of unplanned pregnancy was the same in 1994, and smaller studies have found that even newer birth-control methods haven't made much of a dent.
The theme of the article was about the efficacy of birth control. Your statement addresses morality.
Exactly. Birth control teaches people that they control life and death.
The Catholic Church was far, far ahead of all pro-life groups/Churches on this one. It still is in every case I can think of.