Not sure why you're getting into my business but here we go. Last year was a big upgrade year for me. My wife's income increased about 60% when she expanded her business and my income increased about 25% with my new job, so we upgraded a lot of our older stuff across the board. I also tend to not list my older gear on my signature, such as my primary TV which is a 42" 1080p LG model from 2009. My Apple Watch was upgraded from a Series 0 which wasn't even getting software updates and had a battery life so short that I couldn't even get through my workouts, and it also had a small crack along the side which meant I couldn't get it wet. My iPhone is on the upgrade program, and I've made comments on the forums recently that I should probably get off of that because the iPhone doesn't change much year to year any more. My camera was replacing a Canon 7D from 2009 that had a ton of dead and hot pixels on the sensor. The SSD was because the new camera's RAW files were so big that my old mechanical external drive was massively slowing down my workflow in Lightroom. My display was replacing a 26" 1080p display from 2008 that had color shifted so poorly that I couldn't even get it calibrated any more to do design or photography work and it was very scratched from several moves. I only upgraded my iPad because my wife's old iPad Mini was running so slow she couldn't use it anymore so she got my old one. That Mac isn't even mine, it's my work machine. I gave my old 2012 MBP that I was still using until last year to my grandpa to edit his old home movies after I got a new MBP with admin privileges at my new job—though I am looking to get a more powerful desktop Mac to keep at home later this year.
Most everything on that list aside from game consoles I use daily to make money doing design, development and photography work. And the main reason I list those things is because I want people to see that I'm not overly biased towards Apple and use a wide variety of products from various brands. The difference here is that it makes zero sense to buy a TV with resolution higher than the limits of human vision. I can look at a print from my old Canon and my new Sony and see the extra detail, the high dynamic range, the low noise, and enjoy getting better shots from the much higher 10fps shooting speed. Those are real-world things that I can measure. Similarly TVs have some of these features as well, such as improved color and dynamic range. Those things are worth upgrading for. But if a 4K TV and an 8K TV are the same aside from resolution, then it makes zero sense and nobody needs that. So I try to point it out whenever I can so people don't waste their money on it. And if it's for bragging rights you could even lie and tell your friends that it's 8K because 1, there is no content for 8K, and 2, they won't be able to tell anyway. Nobody can. Not at these sizes unless you get really freaking close and look for the pixels.