Eh, I liked how it ended, though to be honest I could have done without basically everything about anyone other than Roland. I may be remembering the names of the parts wrong, but the afterward or epilogue after the "official" ending of the book was, while for you anticlimatic, for me really the only way it could have ended that made any sense to me, and the "official" ending itself, where the book stops and King advises you not to read the epilogue or afterward or whatever, was pretty damned epic. The first half of that book was a little bloated, though, IMO.
I was more referring to the final showdown as opposed to the ending ending Also it's been a while but from what I recall you could have probably cut 50% of the last 3 books or so and the story wouldn't have suffered.
Also an editor should have bitch-slapped King for putting himself into the books, that was just lame.