Having to wait for firmware updates for things like AF-P lenses is a PIA, old fisheye lenses will break the camera, pre AI lenses won't mount, and all the crop bodies except the the D7000/D500 don't have an AF motor so most lenses older than 2000 don't work with them, it's a mess that I as a Nikon user have become jaded with. The ability to use ancient lenses with crappy optical quality is just not a big attraction to me. The Sigma lenses are so much better choices than many of the Nikon lenses that I'm not even using Nikon lenses much on my D610, it would be far better if Nikon switched to a new mount which all new lenses were compatible with.
As much as I find Ken Rockwell to be odious he does have useful table which shows how ridiculous the Nikon system is
https://www.kenrockwell.com/nikon/compatibility-lens.htm#explanations
YOU have an issue with this. You are making up fringe issues,just like a number of people on DPReview due to GAS.
This is the same logic as in the CPU and GPU forums,where people will make anything which is "old" look like is incapable of even running Tux Racer. Old meaning something 2 to 3 years old.
So people who think Haswell was crap since they jumped to Ryzen and now Ryzen is crap since they jumped to CFL.
Your mention about "waiting for AF-P" lenses sounds very reasonable until you look at what AF-P lenses are for.
There are only a few AF-P lenses:
http://www.dslrbodies.com/lenses/lens-articles/general-nikon-lens-info/understanding-the-af-p.html
Most of the AF-P lenses are low cost lenses made for the D3000/D5000 series and DX which is irrelevant for an FX body and they are cheaper budget lenses. The one which works on FX is also an entry level lens.Then you go on "optical quality",which means you wouldn't bother with them too.
Then you go on about pre-AI,LMAO. I know people who were pros back in the day,who used pre-AI lenses. They were made until 1977,and many pros,etc paid for such lenses to be updated. But lets,see that is 40 years ago.
So what about the last 4 to 20 years then?? Oh wait.
Also crappy lenses - LMAO.
Plenty of decent solid "older" lenses from the last 4 to 20 years - people were getting wall covering prints from film cameras with "crappy" lenses decades ago.
You don't seem to even consider that not all situations even need AF like tilt/shift lenses,astro stuff or even macro stuff at times.
I go to airshows and talk to actual realworld photographers who shot a whole lot of lenses - some with the latest stuff to those with "older" lenses and plenty of D600/D610/D750/D800/D810 users.
Like people with "old crappy" 600MM lenses - oh wait,in realworld people just don't always upgrade to the latest ones,even if they are not pros.
Do you think all of them have the latest lens - that includes ones with published work.
Why should THEY waste money on new lenses if the old ones do the job. More money on new lenses means less profit.
People on this forum told people not to go Sony,Pentax,etc since they "lacked a secondhand market for lenses" and "secondhand lenses sold for more",etc and now the moment Nikon wants to ditch the F mount,its suddenly "not important".
Only gearheads on the internet ditch systems immediately,or just all the time shoot brick walls all the time getting neurotic about whether the latest Sigma has 5% more LPM than a 4 year old Nikon.
I had no issues making largish prints with "crappy old lenses" which shows you how much you know about lenses and is a
bit elitist TBF.
Oh wait,I still see famous old pictures being sold as prints,despite being made on "old crappy gear".
Edit!
Predicts silly argument about how anybody who does not buy the latest lenses with the best LPM tests on a brick wall isn't capable of any photography,and how they must switch to the latest Z mount or whatever mount camera since anyone who isn't on the latest camera gadget isn't a true photographer.
