I sell and rent them because there is demand. I rent Sony's as well and they rent ALMOST as well as the Canons. I am a realist and I deal in FACTS, not marketing propoganda. Canon has some serious issues to address, not that Nikon doesn't have a few of their own.
I take in a lot of trades here, mostly Canon, which I end up Ebaying most of the time. The number one reason I get from customers switching from Canon is lens warranty, number two is close behind with sensor resolution, both serious Canon shortcomings. About 1/4 of my Nikon rentals are Canon users looking to compare before switching, and I am more than happy to rent them the gear to compare. If you think I have to "strongarm" anyone to switch then you seriously underestimate the will of the people to "see for themselves", after awhile they have to quit reading reviews, comparisons and lab tests and see for themselves that the Nikons clearly outperform the comparable Canons. It's easy for anyone with an open mind to see it. Many don't switch, for lots of reasons; too many Canon lenses, don't like the controls, doesn't feel the same, can't afford to switch right now. But many more do. I don't control it......I CAN'T control it, it's called free will in a free market society.
If you don't want to educate yourself, then don't, that is your choice. But don't deride those that do.

Please don't flame me for this. It's a serious question. I have been interested in the Df for a while and read a lot about it here. I usually copy some of the information into a Word doc for my files and recall. I recall reading some where here in UHH about a feature or behavior that left me with the distinct impression of, "I sure don't want a Df after reading this!" But I cannot for the life of me recall what it was nor can I find anywhere that I might have stored the information. Can any of you with younger memories help me? Yes I know, the question is a little vague and I apologize for that. Is there any unique behavior in the Df that is not present in most of Nikon's FX or DX models? I currently use a D5300.