Like most people I struggle with Catholic moral teaching. In theory it all sounds great, but in practice it seems like something only a non-corporeal being would come up with. My question is: how do I know that natural law is objectively true and not just something someone made up? In the following arguments I attempt to show the absurdity of natural law arguments.
God commanded us (everyone) to “be fruitful and multiply”. If you can have children but you purposely avoid marriage and sex then that is against God’s will. Life-long celibacy is clearly not what God intended, He gave us genitals because He expects us to use them.
Flying in airplanes is immoral because obviously God never intended human beings to fly. Just because we’ve found a way to fly doesn’t mean that we should. Just because I can take a pill and enjoy the sexual act without concern for getting pregnant doesn’t mean I should. The sexual act has a purpose which is procreation. Feet have a purpose, which is to stand and to walk. God intends for us to walk, not fly. The desire to fly is a form of angelism, wanting to fly like an angel when God has intended for us to be human and to accept our humaness–earth-bound as it is.
We can be certain that God intended human beings to be nudists because we aren’t born wearing clothes. Adam and Eve were originally naked. It was only after they sinned that they started wearing clothes. God never told us to wear clothes. God doesn’t want us to be ashamed of our naked bodies—if we are truly free of sin then we would be nudists.