I can certainly commiserate with Pogue, having seen my work destroyed by others.
The ones that really hurt are the stories and scripts that originate with you. But, once you take the money, you're screwed. The filmmakers come along and "improve" on your work, and what finally winds up on the screen is a piece of crap.
On the other hand, with straight assignments, I take a very pragmatic attitude.
Somebody comes to me with a story or even an idea. They pay me the money, and I do my very best to give them a viable screenplay. After then, they can do with it what they please. I have no emotional attachment.
I think you have to develop that attitude if you want to survive working in film.