Also worth reading John Gruber's complaints, over and above bugs:
> But I don’t know a single expert Mac user who is not seriously annoyed by the heavy-handed security design of Catalina. Not one. Every single expert user I know is annoyed. That is a bad place for MacOS to be. MacOS 10.16 needs a serious course correction to fix this, and if 10.16 goes the opposite way — growing even more heavy-handed in restricting professional Mac users from just using their machines as they want and expect to — I genuinely fear for the future of the Mac as a platform for serious computer users.
> But I don’t know a single expert Mac user who is not seriously annoyed by the heavy-handed security design of Catalina. Not one. Every single expert user I know is annoyed. That is a bad place for MacOS to be. MacOS 10.16 needs a serious course correction to fix this, and if 10.16 goes the opposite way — growing even more heavy-handed in restricting professional Mac users from just using their machines as they want and expect to — I genuinely fear for the future of the Mac as a platform for serious computer users.
https://daringfireball.net/2020/02/my_2019_apple_report_card