And in this statement lies the problem. No one will ever catch up. When does someone get off the gadget go round? There comes a point when it is all really good. When does someone finally stay with a camera or system long enough to full learn the equipment that they already have? It can take years for a camera to become second nature. That means tens of thousands of frames to get to a point where you are no longer eve thinking about technical things when you are working. When you have gotten to a point where you are just responding to what you see and because you are so in synch with your tools and the process you are able to make visual and technical decisions without thinking.
A great quote by one of the really great photographers.
"The camera doesn't make a bit of difference. All of them can record what you are seeing. But, you have to SEE." - Ernst Haas
How many know who they are as photographers and have really learned to see?
And then this one by Weston said well over a half century ago and is more true now than then.
The fact is that relatively few photographers ever master their medium. Instead they allow the medium to master them and go on an endless squirrel cage chase from new lens to new paper to new developer to new gadget, never staying with one piece of equipment long enough to learn its full capacities, becoming lost in a maze of technical information that is of little or no use since they don't know what to do with it. - Edward Weston
My advice is find equipment that matches the way you see and work. Stay with it. Learn who you are as a photographer and work with equipment that best helps you express your vision. Whatever that might be. Or keep jumping from one camera and system to the next every time something is upgraded. That is an endless cycle and something the camera companies absolutely love but both your vision and your wallet may not love.
Well in that case, I'll just keep using my 5DIII. I'm not a spray and pray type of shooter, so even after 6 years, I still have under 10K shutter actuation. At my shutter usage rate, my camera won't wear out for possibly 100 years.