Hard to say. I was an early adopter of FullHD, always had the equivalent of an xx80 card. Then I stepped back a bit with the 970, as it was the best upgrade path for me (considering I was only upgrading the GPU and the CPU would very likely be the bottle neck moving forward). I was thinking to move to higher resolutions with my new PC. Then my PSU fried my mainboard, CPU and GPU while covid and crypto currencies cause huge price spikes on almost every component and I had to pay way to much for what I'd get performance wise. That's why I'm running a 2060 super now and stay on FHD.

I might consider upgrading the next time I need a new PC, as this left me in an awkward spot: If I want a higher resolution, I need a new monitor. If I buy one, I'd need a new GPU probably, too. And since my CPU would now be a bottleneck for the rig I should also change that in this process. Then I might want a new mainboard, as I'm currently only running on DDR-4 RAM, and so... the best way forward is basically a new PC (I might save some money by keeping my NVMe drive, etc...).

I'm not sure, what I'm going to do in the future. Up until around the GTX 970, you could get a decent rig that plays current games in FHD on ultra or very high and would continue doing for about 1-2 years. If you degrade to medium - high, probably 4-5 years. You could get that easily for ~900-1000 bucks (or less). Nowadays, the GPU alone can get you close to this price range...

I get it. 1080p is about 2.1 megapixels, while 1440p is already 3.69 megapixels - that's 75% more pixels and thus, you need way more performance to render it (or rather raster and shade it). But still... I don't like these prices.