If so much of what a person does is completely supported by something they hate, the disconnect for me is that they aren't really making the kind of sacrifices

If so much of what a person does is completely supported by something they hate, the disconnect for me is that they aren't really making the kind of sacrifices their position entails, so they don't really seem to believe in their position. If that's the case, then why should I, unless it is an inescapable logical argument?