sometimes it's a matter of what they saw of it.
I've known people who heard about how magical
the show is, so they checked it out.
If they're first exposure was a pre-Frid episode or Parallel Time, instant turn off!
But then I'd show them stuff from 1795, 1897, the Quentin/Beth haunting, 1995, and they then had a much more favorable view of the show.
David