For the past few years I've felt the same way; I've been wrestling with these feelings since the release of the 2016 MacBook Pro. I haven't upgraded my Macs past Mojave due to the loss of 32-bit application support in Catalina (I still depend on some 32-bit applications) and due to the increased iOS-ification of macOS (e.g., certain UI decisions, notarization). However, for a while I lamented the lack of alternatives that are as polished as even Snow Leopard was, which was released in 2009. I would be very happy if there were a version of Snow Leopard with security updates.

For laptops, I've decided to go back to Windows after 15 years of using Macs; I replaced my 2013 MacBook Air with a Microsoft Surface Pro 7 running Windows 10. I'm happy with the purchase; the Surface Pro 7 is an excellent tablet, and Windows Subsystem for Linux has made using Windows more pleasant for me since I spend a lot of time in the terminal. For desktops, as of this moment I'm still using a 2013 Mac Pro as my daily driver, running Mojave. Eventually I would like to replace this with a Ryzen 7 or Ryzen 9 build that will probably run FreeBSD.

I'm keeping my eye on the Hello desktop (https://hellosystem.github.io/docs/) for FreeBSD, which appears to have the goal of providing a desktop environment that is heavily influenced by pre-Yosemite Mac OS X's Aqua interface. If this desktop gains traction, then hopefully there will be applications written that are conformant to Hello's UI guidelines, which are based on pre-Yosemite's Apple Human Interface Guidelines.

I lament the state of personal computing these days, and I wish there were more investment in desktop computing; I talk more about it here (http://mmcthrow-musings.blogspot.com/2020/10/where-did-perso...). If I were independently wealthy, then I'd work on this.