Very much so. The fascination to me with metaphor is that it's
  analogy but more: it can take something out of one set and apply
  it to another set that's really not related at all, just by
  *similarity* - and it can be the most tenuous similarity... and
  the metaphor is *so convincing*, even when the relationship is
  atrocious when brought beyond a basic similarity. My favorite
  (least) example is that of comparing groups of people to
  infections in the body. What things have been justified by that
  metaphorical comparison! Such atrocities against humanity
  because people were metaphorically compared to cancers and
  infections that needed to be cleansed, surgically removed,
  irradiated, ... [insert medical procedures used to combat such
  things... which become bombs, guns, propaganda campaigns... and
  all sorts of human nastiness... metaphors themselves justified
  by only metaphor....] We're so accustomed to hearing it, we
  hardly even hear it. But once you 'hear it'... you can't unhear
  it.