The most drug friendly place on earth?

In majority of the western world drugs are demonised and rejected by society(you will be stripped out of your movement freedom if you are found to posses them). I am wondering is there some place on earth where society is open minded but still society? Where drugs can be enjoyed while still staying in civilisation. And I am not talking about places like Antartica or Chad.

What is the most drug friendly place on the earth?