Incentive. When you are given something I want it too. I might even want you not to have it if I can't have it. However, if I am the one giving you the thing i

Incentive. When you are given something I want it too. I might even want you not to have it if I can't have it. However, if I am the one giving you the thing it becomes important for me that you have the thing even if I no longer do. This is intuitive even if it is logically an eyesore.