I am one of the few that doesn't use adobe in my workflow. I use idImager for just about everything except raw editing or heavy JPG editing. For RAW I use capture nx2 and for heavy JPG editing I use paint shop pro. I also use the OnOne Suite as standalone applications. I have put a lot of hours into learning idImager and Capture nx2 and think it was worth the time.
idImager has a very powerfull downloader (Nikon Transfer x 10), batch processor for just about anything you want to do, excellent culling, rating and comparison options, good editing capabilities, versioning, archiving, RAW editor, and a lot more. It's strength is its catalog and search capabilities. It supports multi-user catalog access which Lightroom and many others do not. Even for home use, I see mult-user access as a must. We maintain our photo's in a central location so it's not uncommon for my wife and I to be browsing and editing photos as the same time from different pc's. idImager also pics up the changes I make to my RAW files. You have to manually refresh the thumbnail after you make your edit in capture but it works perfect.
Everyone has their own requirements but this setup seems to work for me. I agree capture nx2 is a little stale but it still meets my needs. After all, the things I do today in post process are not much different than what I did 2-3 years ago.