I use Windows for work and gaming, MacOS for app development (mostly because I can code for iOS and Android in one environment), and ChromeOS for my daily browsing.
I just enjoy how chrome always works when I need to just browse the internet or buy something online without issue.
I know 2 people who wrote COBOL code for some major healthcare systems a long time ago and they came out of retirement about 5 years ago to update/convert that code. They made six figure salaries working from home to update that code.