Of life and of death

Just a thought that I'd like to record somewhere (though I haven't the time to develop it now): it is likely that the underpinning for the Catholic doctrines on the morality of artificial contraception can be traced to (and probably beyond) that for the fifth commandment. How so? Well, it is the Lord who gives life, and it is therefore an arrogant act for one of his creatures to control one's life (or death). This needs some nuanced thought, of course, particularly when one is dying and resuscitation is futile because there is no hope of prolonging life in some way. In terms of human conception and artificial contraception, I think it's fairly straightforward. Not that every marital act must be fertile, but that if a marital act is fertile, only God may decide whether this act results in conception or not. Does this make sense? It is 1:21 am after all..