What is the the thing that made you hate this movie?
I believe these are those reasons
1. Its not set in a familiar place like USA, London, etc...
2. Main cast was not familiar and looked weird.
3. People were expecting a straight serious Robot movie more in tone with D9 or Robocop
4. Ending was anti climactic and weird
5. Chappie was "too humanlike'' and not enough badass police robot.