text: I wonder to what extent the continuation of the Church's sexual teachings is based on the fear that there will not be enough Catholics in coming years, and in particular not enough to outnumber Muslims.  It does indeed seem natural to try to restrict sex to activities that are likely to result in more babies if you are overcome with anxiety about the future existence of your group and consider yourself responsible for it.  If that is your underlying motive, you can't really think too much about luxuries like the rights of gay people or women.