billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

You may be right. BUT, about mirrorless taking a beating, if you drop a mirrorless or a DSLR, bad things happen. And, I am not so sure about the "LESS EXPENSIVE", Sony have many that are not inexpensive.
And, what do you mean when you say, The "mirrorless camera act like the cameras' you know"

BebuLamar

To the OP, after over 120 responses did you find the answer? You're looking for the answer in the wrong place in my opinion. The answer should come from you and not from any other people.

sr71 Loc: In Col. Juan Seguin Land

That Tasmanian devil lives in a cool place, nice web site and pictures

CatMarley Loc: North Carolina

I have dropped my Fuji XT2 twice, once on the kitchen floor, (hardwood) and once outdoors on concrete. Not a scratch, works fine. Fewer finely attached heavy components in a mirrorless, less stuff to jog out of alignment. But maybe Fujis are just made better!

JAshcraft

Chris,
I agree with Joe. I have the Nikon d7200, 35mm 1.8, 50mm 1.8, 18-140mm, 70-300mm and the 200-500mm lens. At 69 years old the weight of carrying all the lenses, except for the 200-500 - (When I use this lens I do not carry others) was becoming an issue. I looked at all the mirrorless cameras and, for my budget, the Fuji X-T2 with the 18-55mm kit lens and the 16mm f2.8 lens was perfect. The lenses are metal and the quality is superb. It still amazes me how light they are and the quality of the photos they produce. The full frame Nikon you have is an excellent camera. If you choose to go with a mirrorless camera keep in mind that the body of a mirrorless is lighter than a dslr, but it is the lens you use that must be considered. I find that my d7200 with the 70-300mm lens is a great match in size and weight. I do not think I would want to place a long zoom on the X-T2. Sony makes great lenses, but check the price and weight, first. They are expensive and heavy. Rent before you buy...

Kananaskis

Chris,
Mirrorless really has very few real world advantages over conventional DSLR's, the weight difference becoming a mute point upon buying quality glass, quality glass is heavy whether in mirrorless or DSLR.
Face it we all look (chimping) at our tiny screens zooming in to check focus and composition, either way screens on both systems are small.
The ergonomics of the Nikon D850 and menu's are superior to most of the mirrorless cameras only the Sony A9 and A7r4 can match it for accurate acquisition of fast moving subjects plus the image quality of the D850 is stellar and you are already well invested into the Nikon system.
You could thin out your lense choices aiming more at your intended goals along with narrowing down to two bodies the new D850 and your 810.
There's extensive coverage within the Nikon world for lenses and excellent quality choices from Tamron and Sigma to implement into your system.
I have shot with Nikon, Canon, Fuji, all are excellent with easy to use menu systems, I have used the Sony systems finding the menu systems challenged. The ever increasing image quality and great AF is top notch on the best Sony cameras which is something to consider if you did consider switching.
Bottom line you are already well into an excellent system which you are very experienced with it simply needs some tweeking to help you achieve your professional goals.

Glenn Reiner Loc: Sacramento CA

Sound advice Joe

aellman Loc: Boston MA

I hate electronic viewfinders.

Chris Mannerino Loc: San Diego

Thank you.

Chris Mannerino Loc: San Diego

Thank you! After reading all the post, it only makes sense to wait.

Chris Mannerino Loc: San Diego

Thank you Jay,

Your response was very thoughtful and poignant. After reviewing all the responses, I am going to sit tight for now. I think in 4-5 years (maybe less), I will go with mirrorless.

I am grateful for this forum.

Thanks again,

Chris

Chris Mannerino Loc: San Diego

Great advice, thank you!

wmurnahan Loc: Bloomington IN

I would disagree on one point, my a7ii with Sony/Zeiss 35 2.8, is way smaller than any DSLR thought of being and the glass is top quality. On my a6500, gives me a almost shirt pocketable digital camera with built in flash, again way smaller than any crop sensor DSLR.

CHG_CANON Loc: the Windy City

Beauty has so many forms, and the most beautiful thing is the confidence to go mirrorless.

SuperFly6

I just switched to mirrorless due to the weight. For me, the weight was an issue due to surviving a head on collision. I'm a Canon user and decided to stay with them. There are a lot of pros and cons with each camera body. I know of issues with each but made my decision to stay with Canon. I purchased the EOS R. Yes, Nikon and Canon introduced their first full frame bodies and yes, both can will improve. Just as someone stated before, try renting one. Feel it in your hands. How it feels with and without the lenses to see if you like the grip/feel. Without the lens do you have more of a grip and with the lens, do you lose some grip?