When I first realized that I was already a libertarian, and always had
   been, in about 1975, it was always quite clear that Liberals, Leftists,
   and fellow-travellers hated (or at least strongly disliked)
   libertarianism.  For reasons that are clear studying the Nolan
   Chart [1]https://en.wikipedia.org/wiki/Nolan_Chart   and the World's
   Smallest Political
   Quiz.  [2]https://en.wikipedia.org/wiki/World%27s_Smallest_Political_Qu
   iz
   The Right opposed libertarianism because libertarians promoted both
   personal and economic freedom, while the Right seemed to like only the
   latter.
   The Left opposed libertarianism because libertarians promoted both
   personal and economic  freedom, while the Left seemed to like only the
   former.
   That made 'sense', so to speak.  Not that the liberals and
   conservatives actually made sense.

   it is actually more fundamental!

   consider that both Right and Left  promote the idea of an infallible
   strong center, which conveys the laws upon mankind.

   Libertarianism is by definition decentralized; delegating decisions to
   the edge.

   given that power corrupts; and absolute centralized power corrupts
   absolutely, it is clear that both Right and Left are deceptions by
   Centralized Power to maintain itself.

   the political question at core is this:

   centralization? (and abuse of power)

    - or -

   decentralization (and individual responsibility)

   the absurdity of humanity is that our cognitive bias sees only the
   direct cost of personal responsibility, yet ignores the global cost of
   centralized abuses.

   best regards,

References

   1. https://en.wikipedia.org/wiki/Nolan_Chart
   2. https://en.wikipedia.org/wiki/World's_Smallest_Political_Quiz