I can't agree more about code folding. The shape of the code lets me use visual patterns instead of actually thinking about the parse tree
Perhaps it would work better if the code were simply hidden instead of collapsed. Then the non-folded code would remain in the same place as before, and it would be less disorienting.
Maybe there is a need for a support group here.
http://notepad-plus-plus.org/assets/images/docMap2.png (on the right hand side)