fwiw, when I'm on an OpenBSD desktop, I use cwm which doesn't supply titlebars, and I use Meta+click to move windows. That's great...On OpenBSD. But sometimes I'm using a Windows computer. Sometimes I'm using a Mac.

...And sometimes I'm using OpenBSD, so titlebar buttons introduce a titlebar I didn't want, and didn't need, which doesn't match the rest of my desktop customizations.

It's just a bad paradigm.