Dark side of Appreciation

I learned about this on Sunday. After teaching the Steps to Gratitude class on Saturday I was open to learning more and I was informed about the dark side of Appreciation. Most of us don't see it as even being apart of Appreciation. It is what happens to distract us from achieving Grace. What is the dark side? Infatuation. When you appreciate something so much that you have to have it which than turns to must have; which may than turn into need. You are in infatuation now instead of appreciation. Once it becomes a need you now have an addiction. Here is an example: I appreciate a cup of coffee so much I would like to have more. I receive another cup of coffee and I am not satisfied so I will get another one. I have it but feel as if I need another. Hope this makes sense.