Talk politics.

But of course, the Church went through a lot of changes theologically, too. The birth control ban fits with the direction it was going in finding spiritual purity. Which in itself ooks like a solution to the famous pagan Greek Problem about where humans fit in the realms of 'gods' and animals. Sex is a natural, animal desire; animal passions cloud the mind which we use to understand what the 'gods' have to teach us.