The hardware was great, but life on a Mac always felt a bit convoluted. Updating the OS was especially frustrating as a software developer because of all the interdependent bits (xcode, brew, etc) that often ended up breaking my dev environment in some way. It also always amazed me at the stuff that was missing. Like, how isn't the default terminal app fully functional after all these years? On the plus side, over the time I used it they did add tiling and the ability to hide the notch.
Finally at the start of the year I moved back to Linux and couldn't be happier. Had forgotten just how nice it is to have everything I need out of the box. The big thing I miss is Affinity Photo, though that looks like it's in the middle of dying right now.