Why was Germany disappointed with the Treaty of Versailles?

Germany was
disappointed with this treaty because it punished Germany very harshly.  It made Germany claim
complete responsibility and guilt for WWI.  On top of that, it did many things that hurt Germany
economically and/or took power from Germany.  Among these things were:

• Forced Germany to pay reparations for the war.
• Took
  various German territories (both overseas colonies and parts of its European territories) away
  from Germany.
• Prohibited Germany from having a full military.  The treaty
  allowed only a very small military with no air force or submarines.

All of these provisions disappointed and angered the
Germans.