In this case I have to confess that I use 100% directory only - good old Norton Commander makes it easy for me and no desktop search will be needed for me anytime soon.
However we have to remember context of directories here - not your or my disks, not yellow pages book, but Web: the difference is critical because there is far more data in the web than on my or yours disks combined, and believe me - I've got a lot of data.
I have purely academical interest in the subject - I prefer the market to decide who lives or dies, and if DMOZ has got its market then its fine by me. I'd say I feel more sympathetic to DMOZ than not since they listed a link to my site very quickly (which makes me believe that generally delays are not due to editors, but due to quality of site) and I used their data more than once.
Having said that I think directories in general and DMOZ in particular are in terminal decline insofar as Web search is concerned: 99.9% of my searches that I do could not have been possibly answered by DMOZ simply because they don't have this data.