Let’s take contraception, for example. Everyone knows the Church teaches this is wrong. So why do people presume to demand that the Church say it’s okay? If you know you’re going to do it no matter what the Church says, then why do you even really care what the Church says on the matter? Obviously a person does care what the Church says about this or any other moral issue even if he disagrees with it if he keeps talking about it.
Is it God’s grace that keeps people who disagree with these things coming back, perhaps in His desire that they will eventually, individually, come back to the truth via a good priest’s teaching? Or is it a psychological phenomenon?
It’s not just doing it and ignoring what the Church says. Often, it’s demanding that the Church change what she cannot change. That makes it a different thing all together.