My computing history (where a clipboard existed) began on old school Macintosh's. For past from clipboard ⌘+v was how it was, ctl+v on Windows when that system became my usual OS.
Dabbling in Unix and Linux necessitated the learning of shift+insert (and middle click in most window managers.)

I still use Windows the most due to work and gaming, but usually have a terminal open to a Linux system for various uses. I'm glad that many windows interfaces support the shift+insert variant for pasting copied or cut content.

What do you use most now? Did you change your default paste command? What triggered that change?