I have to agree with those who feel it all goes downhill after Wizard and Glass.
I mean, I understand why King would be having issues after the car accident. Dude almost died. And I understand that writers tend to work their issues out in their writing.
But, seriously, the final three books felt like one long personal therapy session on the accident and what his surviving actually meant (actually, IMO, this became a major theme of most of his later works, but given the whole
, it looms much larger in this series). In fact, the whole feeling of the ending can, I think, be attributed to his searching for meaning in the whole mess.
Now, it probably helped him out a lot. But, to me, it felt like he forced the series to take a sudden, sharp turn in order to go where he wanted it to go rather than where it naturally was leading.