An unalienable rights ends at the point where it requires someone else to surrender theirs. If healthcare were something we could provide for ourselves without involving the time, resources, and skills of another then you would have a point. But it’s not. You do not have a “right”, unalienable or otherwise to a claim on another person’s rights, in this case a right to their own productivity and time. Inserting the taxing power of the government as a middleman does not change that dynamic.