It's also a handy way to get a window that got moved off screen easily, which can happen in setups with multiple monitors that get connected and disconnected.

Also, most applications will actually honor Ctrl+C/V as well as the Ctrl+Insert/Shift+Insert shortcuts, from the 1987 IBM CUA guidelines[0].

[0] https://en.m.wikipedia.org/wiki/IBM_Common_User_Access