Someone below sagely noted that, because we are contingent and finite creatures, our only real choice is WHOM we will serve. It will either be God, in which case we will enjoy the liberty of the sons of God, or the devil, in which case our lot will not be very enjoyable. Ultimately, we are just sovereign enough to decide whom we will serve, but not sufficiently sovereign to serve only our own selves.
Well, OK, that is between you and me, and we are both believers. But what problem do the libertarians have with a libertarian god?