i know how you feel bro. i did that too for a while, until the only things left were the endless sunken treasures in skellige.I'm at the stage where I have finished the main game, HOS and B&W but cannot bear to say goodbye to Geralt so I am scanning the maps for small things to do. It's amazing how a game can have such a deep effect on one's emotions. I did feel pretty shattered after the Mass Effect games but this is even worse. And I don't know anyone in 'real life' who plays them so it's great to know you guys feel the same. Hats off to the makers of this amazing series.
i really really think the devs wasted way too much time with skellige-- all those small empty islands and endless amount of underwater treasures, whose only use is to sell to vendors.