There is an option to edit your posts (typically), so you may want to try that.
2K vs. 4K vs. 8K is no different than the debate we had when going from 720p to 1080p back in the day. With a 42" display, it was almost impossible to tell the difference between 480p and 720p from a 12' viewing distance. Now we have a ton of native 1080p content, and we have displays which are large enough, or we sit close enough to, that we can see the jump in detail and resolution that 1080p offers.
The big jump with 4K isn't so much the resolution, but the enhanced color that it offers with 10-bit and even 12-bit color available to be displayed. The problem being that most displays don't actually support 12-bit color.
I don't see any advantage at all, in the general consumer market, with 8K. The requirement for 48Gb/s cabling is going to really trip people up who already are having serious issues with the 18Gb/s requirement of 4K/60 signals.
I have little interest in 4K as it currently stands except for my front projector. 8K is just a joke and should be treated as such for pretty much everyone except the insane PC gaming crowd who loves every tiny little nuance that they can claim.