"We can wax eloquent for post after post about the creeping liberalism in the church even in the 1800s and the effects that it had on once-clear and mandated practices, about the death of orthodoxy in places like Harvard, the once-brilliant seminary. Exclusive psalmody, head covering, etc. are easily quoted in their ecclesiastical historical contexts to show the rising influence of worldliness in the church and a moving away from biblical ordinances.
"But we don't like to touch the church teachings on birth control, because we've gone so far in the other direction that a return to them is too bumpy a road. Birth control was the province of sailors and prostitutes and Christians didn't do that sort of thing. Not so much the advent of the Pill, but instead its general acceptance in society, both secular and Christian seems to have almost killed off the last vestiges of opposition to contraception. Find me a place where the Roman church is not ridiculed for its historical stance on the matter - it is almost universal. We worry so much about the world polluting the church for the most part, but this issue, for some reason, is beyond the Pale."