I've read about what happens at the end...I can understand it would leave people feeling like that, from the sounds of it
King basically argues; 'that's the story fuckin' deal with it.'
I'm not a great fan of the ending, but I can live with it; it explains a lot of Roland's obsessive nature.
Just (ahem) acquired Steven Tyler's (auto?)biography, and Kurt Cobain's private journals.
I'll be sure to fill you in. Although, Im not sure reading close to 300 pages of Kurt's scribbled/handwritten ramblings is gonna be the greatest literary experince I've ever had.