As a non-religious outsider, the extreme focus on issues related to sex and sexuality by the catholic church (and other denominations) has just been weird, especially given the lack of support in scripture for some of it. It's as if morality had been reduced entirely to some concept of sexual morality.
Now I know that isn't true in every church and doesn't come from every priest, but it has been the public face of religion in this country for most of my life.