This is a weird reason, but there is a logic to it.
I use Linux at work, and I associate Linux with writing software.
Once I'm done working for the day, I want to relax and do something fun. For me, that is Windows. While I don't particularly care for any OS, I associate one with work and one with play.
The opposite was true when I used to work with .NET on Windows 7. I hated using Windows on my home laptop, and Fedora became my "fun time OS".