For me, and I'm wondering for you and S.adventure too, the problem is that I hate everything I make.
The reason is a common one among artists across the board. During the journey of creating a piece, you have incrementally improved. So by the time the piece is finished, it's a reflection of your amateur self.
I and many others are in a perpetual state of 'urgh I can do better than that'
I don't edit and never read anything I've written because of this. I hate everything I create when confronted with it. So yes, I think I know what you mean..