Everyone will have their own reasons to keep W10 or upgrade to W11... Really depends on the hardware, if your hardware supports it and when they discontinue W10 support altogether, then do a backup of anything important and upgrade... For systems that require tweaking to bypass the hardware requirements (depending on what those are), you really need to decide if it's worth the upgrade or not (if you have a non supported CPU or have 8GB ram as an example).
Here's my situation, I have many older computer and laptops, they're all on W10 and will remain on W10 as the hardware isn't supported, I don't want to bypass the hardware requirements either, plus, it has the bare minimum of 4G (one has 6G after I put in a 2G ram) and these are still on the HDD, not SSD. Having said that, my 'newer' laptops that have 8GB, 20GB (4+16GB) of ram, I've updated them to W11 as there are no hardware requirements to bypass by tweaking...