I wanted to start a new thread with this because replying to someone else's posting with this would seem a bit rude, I believe.
I have seen a lot of OPs ask a question about this or that body, and whether it would be worth it to upgrade. Invariably the differences between the models and a lot of personal preferences are listed. That is normal.
Here is the part I simply do not understand. In most of these threads, someone will invariably ask something like, "What feature is lacking on your current body?" Or "Are you sure you are pushing your current equipment to the limit?" While these are valid questions, how many people do they really apply to? If you are an extremely creative professional and absolutely NEED this or that feature, fine. My belief is that this simply does not apply to 99% of people who own and use a camera, of any kind.
I have been taking pictures since the 1960s. I got my first bridge camera (Panasonic DMC-FZ8, I miss it) about 10 years ago and moved to DSLR in 2009. None of those 'upgrades' were based on need. To even ask the question about pushing the limits seems, to me, to be putting way too much emphasis on the technical and logical for most people. Don't most of us upgraded because we WANT to? I wanted a rear control wheel, auto ISO and flash commander, so I bought a 60D. I didn't need any of that stuff. Nobody pays me for my photography, which I am sure is true about most people on POTN.
Putting this kind of emphasis on the technical/logical process of photography seems antithetical. Isn't this an art form? A creative, emotional endeavor, meant so satisfy the creator as much as the viewer? Does any other upgrade in our lives get this kind of technical analysis? My feeling is that upgrading anything in your life should be because you WANT something better, however you perceive better. How many people get the test-track specs before buying a new car? Close to none, I bet. You get the car you WANT based mostly on emotion.
I bought a Kimber .45 ACP because it felt good in my hands. Not a cop. Don't even carry a gun. But I do like shooting and I wanted a new toy. Same thing applies to photography. I have already outlined my photographic skills and needs. With that in mind, I will be buying a 5D3+24-105 kit when I retire in March. Why? Because I want one. What is wrong with that? Without lots of people buying stuff they don't really need, wouldn't Canon go out of business?