Taking it one step further, some religious beliefs extend to banning birth control. If we are having an honest conversation about life here, where do we draw the line?
I see that as a separate issue, though a valid one. I think that one affects married couples mostly, since those same religions are usually very strict about pre-marital sex. But I think it's an example of the ways in which religious rules and customs can make situations much more complicated than they need to be. The notion that sex should be attempted only when one wishes to procreate betrays a deep misunderstanding of how powerful the sex drive is (and how inefficient sex can actually be at producing viable young).
So, I agree, the approach that says that you cannot try to prevent pregnancy and that you cannot end a pregnancy promotes a view of sex as purely a tool for population growth that must be managed and controlled in ways that would normally not allow for the kind of emotional investment a pair of loving human beings can't help but feel.