Regarding scaling, prob arises if you have to increase it as font, icons can be too small. I have to on higher DPI monitors.
The 'default' scaling the programmers have made for is 24" at 1080p. When increased scaling is used certain apps, microsoft windows texts, steam text etc is fuzzy and/or displayed incorrectly. This was big learning curve for people who moved to 4k a while ago becuase its was abysmal. Web browsing out of whack.
Things have improved but still not fixed. (you stay at 100% scaling because you cope with the decreased size at 109 dpi, many others cant)
This is what i mean about the benefit of 32" @ 1440p. its the same DPI as 24" @ 1080p. Perfect scaling, text/icon & application size at default.
* Pixel density is the same, if you didnt notice it on a 24", you wont notice it if it same DPI was 10ft across. The prob youre talking about only applies if you DONT increase the resolution as you increase size. (which would lower the DPI)
The main thing from all this though is that OP gets a large monitor!!! You know the best aspect ratio? 2:1. if only such displays existed. Its right in the middle of 21:9 and 16:9, and directors have tried to push it for many years. In movie land its called 'Universium'. Its the perfect compromise. Even the resolution numbers are aesthetic. 4k is not random number like 3840x2160. 4k should be 4000x2000.