That would be a tough situation, I'm not sure. My first thought is that the moral choice for me would be to accept celibacy and try to do the best I can for others in that role.
It seems more fair to me if I bear the burden of my moral framework, given the proposed determinism.
Of course, this is sophistry; ask about whether two celibate gay men would be allowed a Catholic wedding and the answer will be no because they can't have children, nature of marriage, yadda yadda. Ask whether a man or woman without intact junk can get married and suddenly it's love that is really important.
I still think it's a pretty fair generalisation of traditional Christianity and the vast majority of Christians (liberal western Protestants are a minority on the global scale, and even they don't universally accept abortion and contraception, take for instance Pastor Anderson)