Why do we like to touch fluffy things?
An answer I got from Jan Kolář of Charles University:


  I'm not sure that people prefer fluffy things just from the fact that
  they are fluffy. They like things that are soft to touch such like
  pillows. The popularity of fluffy things might have a simple
  explanation: There's no danger of getting cut.


So the fact we like to cuddle with dogs and cats has probably nothing to do with our furry past.