For my work computer the main simple reason is that IT doesn't support it. Beyond that, I write a fair amount of software that will be run on windows machines

For my work computer the main simple reason is that IT doesn't support it. Beyond that, I write a fair amount of software that will be run on windows machines and windows only software so I'd need a second machine to test on either way. And finally, Windows 10 pretty much just works these days and honestly gives me less day to day trouble than my Linux machine does. With WSL2 and Docker the difference in developer experience between Windows and Linux is smaller that it's ever been.