I get this withdrawal feeling putting down Dune6 (Chapterhouse). This is the similar feeling when I finished Lord of the Rings trilogy. It was the drive to finish that kept me going. The books themselves became dull and repetitive. But the addictiion kept me moving till the last page. For few hours, I don't know what to do with myself. I don't have Dune to read anymore and I don't want to start another book yet.
The big confrontation between Bene Gesseri and Honored Matres was so anti-climatic. The mystery “one time” weapon was never explained. The “wild thing” sub-plot was weak. And I still don't get this Duncan Idaho obsession Frank Herbert has. The deep, philosophical political/religious pearls and wisdom got really boring.
Am I going to not finish the whole series next time? Probably not. This old dog does not learn new tricks in this department.