There’s some amateur radio stuff that I use that only works on Windows. I have minimized my need as much as possible.
Quicken is also tricky. There was a time when the Mac version was a joke. Now it’s fine but missing a ton of the Windows version features.
And then work, I either have to remote into my desktop at the office or run Windoze on my Mac to run the key piece of software we use to do our job.