To put it more diplomatically, most people are operating from different premises than we are, and changing those premises is hard.  It's not likely to happen though arguing with them on the internet.  In fact, that's a great way to harden their current beliefs.

Our primary argument, when talking to non-libertarians, should be that Bitcoin is useful.  If it continues to exist and grow, that itself will eventually serve as a solid challenge to their worldviews.