If buying 32" 4K resolution is a must else the pixels are visible.
Is it really? While I understand that 1440p on 27 inch will be noticeably sharper than on a 32 inch monitor, but even at 32 inches you are still getting ppi equivalent to a 1080p 24 inch monitor which most of the folks are usually upgrading from & are already used to.
Those upgrading from 24 inch 1080p will not find any upgrade in terms of sharpness, which 27inch 1440p or 32inch 4k will provide, but it will still be an upgrade of screen real estate & the additional real estate will help in better productivity & immersion.
Honestly, it depends upon the use case. If you are mostly using your PC for gaming & entertainment, the extra real estate will provide a big boost in game & movie immersion while also being sharp enough for daily use. This is great because it will also be easier to push games at high refresh rate on 1440p. On the other hand, if you are someone doing lots of productivity tasks, like coding, editing & what not, the higher sharpness will be more helpful here while also proving higher sharpness in games.
As has been stated a lot of times everywhere, 27inch 1440p is the sweet spot for sure, but if you are after a bigger screen size, 32inch 1440p should also be fine as long as understand that you'll not be getting any sharpness boost, which honestly might not matter since you would mostly likely be sitting a bit far from the monitor while gaming.
Note: The above views are purely based upon numbers & not any real world experience. I own a 22inch 1080p monitor, so take my views with a lot of skepticism.