Earlier quoted context omitted.
Reasons being? Because I didn't have a single issue with Catalina. People consider their anecdotal experiences as universal (I offer mine as a single counter example to the parent's experience), when it could be all kinds of weird factors in their case (a faulty hardware run, some incompatible peripherals, user errors attributed to the OS, application errors attributed to the OS and so on).
Yeah i also do love all the recent updates, i am very happy with macOS.
1) I hated the butterfly keyboard (but fortunately they have changed that now, even if it took them 3 years, unfortunately I'm stuck with a buttefly model myself)
2) I hate the touch strip - at least the restored the Escape button, but I have no use for it and it just sits there (had higher hopes when it was introduced).
3) I'd like more than 1 port in the MacBook (not that I have one, but I read rumours that they plan to release a new MacBook with AS that I'm interested in)
4) What is the genious that designed the mouse that doesn't work while it charges?
5) I know about "price differentiation" but having the black mouse/keyboards more expensive is a dick move.
That said, 2 things I do:
1) At least every 2 OS releases I do a clean new macOS install. No particular concrete reason, but it might help my case having a "cleaner" system.
2) I've never cared/used Time Machine. I use CCC on my own. So I never have the TM related issues some people seem to have.