As I mentioned in my previous post, I had a quote in to part exchange my D7000 for a D7100. It equates to depreciation of roughly £350 for each of the years that I've owned the older camera. Of course it's only realised if I actually go through with the deal.
I wonder though, how many of us would have spent £350/year on 35mm film and processing, prior to the rise of the DSLR in the last decade?
Of course, back then we bought a film SLR and usually kept that for decades to, so depreciation wasn't really an issue!
And, others will benefit by finding a good used D7000 will soon be available at very reasonable prices - they're already going on ebay for c£500.