Hmmm, I don’t believe Christ would agree with you. We are flawed, ALL of us, and I don’t think birth control or divorce are the litmus test for a Christian. The only REAL Christian was Christ himself, everyone else is just aspiring to his example.
I know that Protestantism has come down to the lowest common denominator "accept Jesus into your heart" , and you can do whatever you want, because you have a fallen nature, and can't help it, that God understands WHICH IS TOTALLY FALSE!, never the less, people who use contraceptives are false Christians. Don't deceive yourselves.
We have a fallen nature, and because of it, we need God's grace to even believe there is a Trinitarian God. God gives us the grace to do his will, it is us who choose not to accept His grace and His Will. The sign that we don't accept His will, and thus have not His grace, is our deeds, how we live, our actions. Divorce and re-marriage, and using birth control, are outward manifestations of a rebellion against God's grace. The only REAL Christian was Christ himself, everyone else is just aspiring to his example.