It's really rare to find anyone who merely wants to argue for it. Most either keep it to themselves or try to impose their morals on others.
"Morals are a good thing" whose morals, exactly? Let me guess, yours happen to be the correct ones?
Abrahmix religions and Hinduism generally disagree on several moral issues, such as how many gods may be worshiped.
/s (for "scottish")
Fast forward a few centuries and that (very practical) advice has become 'word of god' moralistic. Now with modern birth control we have better ways to avoid pregnancy than abstinence. But (unsurprisingly) the church's practical advice hasn't caught up with modern technology.
/"chewed gum" arguments?
Also regardless of political correctness, the US at least doesn't seem to have any problems ruining young people's lives in order to appease to religious groups demanding to dictate what consenting adults can and can't do to their own bodies.