It all depends on the person. 4k to me makes a huge difference with a solid HDR enable product.
4k isnt just a catchphrase its the standard for current TVs. Full HD has become obsolete. Sure you can still buy Blu Rays but those who have a 4k TV will want a compatible unit for it.
4k not only boosts the sharpness greatly compared to 1080p screens, it also cleans up the image and pops out the detail alot more.
May i ask why you brought a 4k TV?

Imagine a customer invests into a good 4k TV.. and the brand new consoles on the market are unable to achieve the basic TV settings. Its abit of a put off to the majority. 

They would be stupid in the marketing catagory to not advertise next gen consoles as 4k machines. If the devs want to downgrade the pixels to 1440p they can always do that.

I agree, HDR is what makes the difference, then frame rate. I rather play SotC remake in 1080p60 than 1440p30. Even when sitting close 1800p checkerboard (what GTS is apparently) looks fantastic. 60fps HDR is all I want.

I still watch regular blu-ray, don't think the extra price for 4K is worth it, plus I don't sit that close when watching movies. Netflix, still 1080p as my bandwidth doesn't support 4K streaming. Cable tv still 720p/1080i. Switch looks great as well.

The benefit of a 4K tv is that it can scale all different formats much better than a 1080p tv and has better color and brightness / contrast range. Native 4K is the icing on the cake yet not really needed imo. It's great for sharp looking menus, hud and static scenes. While the action is moving you can't really resolve 4K anyway, definitely not on a 65" tv viewed from a normal distance.

I am on the 4k bandwagon, for the content that is used to maximize 4k and the color of the TV gives me a lot of eye candy.

Native 4k resolution isn't required for HDR? And you can market a console as a 4k machine, without all of its games being 4k, thats down to developers (most 360/ps3 games aren't 1080p), what I'm saying is that 4k comes at a huge cost of other graphical improvements like lighting, quality of textures, pop in, dOP, VFX/simulations, poly count and of course performance. 

And how can we say Full HD has become "obsolete" when its still completely the dominant resolution for media consumption. I have a 4k tv and by default most of the content I consume is in 1080p and I don't see anything "obsolete" about this resolution.

I got a 4k tv because it was on sale, I do love technology and wanted to experience the next jump. I would say I have quite a well trained eye and I honestly see the difference in resolution isn't huge unless you have a huge 60"+ TV or sit right in front of your screen. I appreciate it but I also see 1080p as a very pleasing resolution to the eye. 

Given how much pure processing power it takes to render an image natively in 4k in laymen terms we're talking 7-8tflops for PS4 quality visuals,and realistically next consoles will be 10-12Tflops, I just don't see it as a worthy investment when there are still many other improvements they can make that could make an even bigger impression than a slightly crisper image. 

For example I'd much rather see a 1440p checkboard (or even 1080p) presentation which represents witcher 3 in its original trailer, than a native 4k presentation of what the game looks like the game when it actually launch.

https://youtu.be/bX_WePhiYHE

I've never even used a 4K TV myself, however my uncle now has a 4K TV, an Xbox One X and a PS4 Pro, so when I visit him next time I will finally be able to see what all of the hooplah is about!

My normal viewing distance is 5 ft =]

I will agree 4k is a resource eater. I believe its more to do with the bandwidth than the Tflops. I could be wrong there.

I brought up HDR because there is very little content that is HDR that isn't 4k. Its a great compliment for high pixel counts.

The reason why I said 1080p has become obsolete is because TV brands aren't or rarely making 1080p Panels anymore. The content will always be there for 1080p however the industry is all about going forward not backwards. 1080p and 1440p is going backwards.

4k with all those effects you mention compliments them quite well, they will look absolutely amazing when viewing with a extremely sharp image.

At the start of this generation I remember everyone bashing the Xbox One for not hitting 1080p regularly, so imagine the same thing happening when next gen arrives and games aren't hitting the TV standards.

Personally (I will be hated for this) for console games, I much rather have 30frames at 4k in campaign modes and keeping the must have 60fps solely for MP. I was disappointed when 343 announced Halo 5 to be 60fps for campaign because campaigns don't really need 60fps to run and they could have done so much more with half the frames just like the original games. Majority of the time when playing single player games, its like playing out a movie, and the visual quality would be more effective than the gameplay. As for High end PCs its not an issue or using a Mouse 60fps is quite necessary.

Next Gen wont have issues running 4k as long as there sticking with current gaming engines, of course that will change sooner rather than later. This is why I think the XB1X is in a good situation even for next gen consoles, because when next gen arrives its pretty clear they will focus on 4k content as its primary selling point, and if true, that means all the X has to do is render those next gen games at 1080p which will help push next gen games on the platform so its looking pretty future proof right now.

Anyway I love my 4k TV and PC setup, I am happy running games in-between 40 to 60 frames at 4k because the clarity is just so much easier on the eyes.

I have to agree with you. And that as you put before, devs will decide if for their game there is more value in doing 4k30fps, 1440p30fps or 1080p30fps (both checkerboarded upres) or putting more effects, drawing distance, etc for the SP portion and keeping 60fps only on MP and perhaps fighting, driving games.

I don't even mind some fps drops if the gameplay is still fluid enough and the content is gorgeous and well made.

Perhaps invest in a bigger living space instead of a bigger tv :)

I play GT Sport at 5 ft from that 65" tv and I don't notice it's not native 4K. I do however notice that SotC at 1080p60 is not as sharp at that distance. Yet that's better from the couch anyway, more overview while in a racing game you're always focused on that one little spot on the road ahead.

HDR and DCI P3 color space should become standard first, no excuse not having that anymore in new games.

When the least powerful machine in the market will be able to deliver 4k @60fps, then and only then most devs will use it as native resolution for their games, and probably they'll still be using lower resolutions for cheaper projects.