My MacBook Pro for work is 3 1/2 years old, and it still works well. When new it came with macOS 10.13 High Sierra, and I upgraded the OS to 10.14 Mojave probably late 2018. However, when macOS 10.15 Catalina was released, it was a buggy, incompatible mess - and it took quite a while before the OS was stable and decent. Consequently, I was
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