I don't have a Z6 or Z7 nikon camera and to be honest I would not touch one, even being a Nikon user for more years than I can remember. Why? because it only takes one SD card the other being the more expensive XQD card. Why on earth did they not make both slots as SD card holders beats me. Also looking at the nikon videos on them it seems to me they have thrown everything at them , they more it does the more to go wrong. I would rather spend time taking a photo than spending it on setting the camera up.
No I will stick with my D810 as long as possible even if it doesn't have 4k capabilities . Now if they made a D810/ with 4k I would be the first in line to buy
I guess you can't please everybody.
You are right. You shouldn't touch a more advanced camera if you aren't going to buy the necessary accessories required for it to perform optimally. I think you have made a great decision.
If you've already got an axe that works great, and are strong enough to use it, why waste money on a chain saw.
You forgot one other outstanding point. You can get away with smaller, cheaper, slower hard drives on your computer to process the D810 images although loading them into LR will take literally at least, 10 times longer due the difference in the read and write speed of the storage devices you are comparing. SD isn't just slower in the camera. The speed reduction is across the board in your workflow post shooting. If you're not in a hurry and have other stuff to do while files download to your PC transfer rates are meaningless.
Look at it this way.
This thought process is like complaining that your new Bugatti has an engine built to develop peak horsepower with 94 octane fuel to do the 275 mph that Bugatti owners love boasting about after spending 3 million for the vehicle before taxes. And then cruising around town everytime you need to fill up to find the wrong gas for a few nickels less that is guaranteed to make the valves knock and make it go real slow and puke like a sick dog when you try to pass (by Buggati standards).
Substitute any performance machine for the Buggati. A camera, a jet, a boat or a computer. Speed cost money...how fast do you wanna go?
It kind of puts a value on actually learning to use Nikon cameras and lenses as opposed to breaking out the credit card and expecting ones skill level to elevate proportional to their credit rating everytime Nikon annouces a new product. And BH starts a waiting list to attract all the hungry fish. Or are we looked upon more as sheep than fish in Nikon's eyes I wonder
If springing for the accesories is a deal breaker buying any new tech just doen't make sense. I think you made an excellent decision if optimal performance makes that little of a difference in your everyday photography.
If you are truly happy and enjoy using what you already have I have one last question. Why'd you even bring the subject up?
What was the reaction you expected when you posted it?
Happy shooting.