I am not a regular Mac user but I was once asked by client to port my CI/CD related script so it can work for developers who use Macs. Script involved dealing with docker among other things. After dicking around for a while I've discovered deeply nested folder created by docker that was not supposed to exist after successful script completion. Do not remember all the details but this folder was a thorn. Short of sacrificing a virgin no matter what I tried I was not able remove it. Invoking search power of Google did not help either - plenty of recipes and suggestions and none worked. Finally after giving this Mac to system gurus and them dicking with it for a day I was told that they have failed so far it is no longer worth their time and they will reinstall the OS.