I'm still rocking the 5D. Yes, there are some features that I'd like to have that newer cameras offer. (Tehtering, Live View, 100 percent VF, etc...)
However, I'm still working on my glass collection. Canon doesn't really have anything that speaks to me on a personal level and I'm not really making much money.
Being that I own a FF camera and could possibly get a back up for 600-700 bucks, it makes sense for me to stick with it until I really NEED an upgrade.
Besides...look at the attached image of my son.
For a camera that isn't supposed to be good at high iso, not great at focusing with outer focus points, and a lens that's a little soft wide open this isn't bad.
Canon 5D, 50 1.2L @ 1.2, ISO 3200, Outer focus point used for focus.