MacOS was starting to get good in 2004, but unfortunately I feel that it went to their head. My opinion of MacOS didn't really start to decline until Catalina, at which point it started to become blatantly obvious that Apple was focused more on "business" than "computers" these days. I was surprisingly content with the openness of Mojave, and even hopeful for the future of the OS. If any slivers of hope were hanging on during Catalina, they were certainly demolished when they showed off the Big Sur redesign.