We bend raw copper and aluminum busbars at work for manufacturing industrial electrical systems. All standard hardware. Plus whatever else goes into it like insulated supports, polyballs, mounting hardware of components on panels, etc. So I'm probably one of the rare exceptions that use SAE more than metric, especially how pretty much every car (even American made ones) use metric now. Other than maybe changing a bolt for an old lawnmower or something, yeah I get why it's not really used much anymore.