I think nerds like us are more likely to experiment and make occasional drastic changes to our computing setup. And in my case I grew up during a time when there was a lot of change in the desktop OS landscape, so sticking with one OS from my childhood to adulthood wasn’t really possible (otherwise I’d still be on Microsoft BASIC and OS-9).

Familiarity and “just-workitude” really are by far the most important factors for people picking OSs, and these days it’s possible to stick with one platform for decades.