It is hard to explain to vanilla people why the picture above in my eyes is not humiliating or degrading at all and is seen by me as just the opposite. Collaring in D/s is a formal bond like a wedding ring to a marriage. And the chain or the leash is a symbol of the control that has been given to someone else. And this picture with the woman leaning towards the man, on her knees is for me the perfect symbol of that. His hand is her hair is not pulling her towards him, she is leaning even if his hand would be caressing her hair.