Do you mean in the strict usage of a Ethernet repeater hub, as opposed to a switch? Where do you still encounter those dinosaurs?

Everywhere in large/old enterprises. I swear they multiply when nobody's looking, and they tend to cause massive headaches when they're plugged in by the unaware.

Hence: Kill on sight.

I see your point, but if the remaining problem to solve in our civilisation is what type of screw heads then we're doing pretty good :)