I am part of humanity. And humanity is dramatically affected by over-population. And over-population is a HUEG problem that affects ALL of us. And over-population could be much more succesfully addressed if one billion of humanity's members were formally allowed to use birth control instead of being sharply rebuked for doing so. And they could also prevent the spread of a heckuvalot of sexually transmitted disease. None of this immediately affects me as I sit here typing, but it DOES affect the whole of humanity of which I am a member.

And rigid lack of acceptance of my gay and lesbian brothers and sisters also affects me by causing them undue suffering and torment. That is how the Vatican's policies affect all of us, really.