Well, I see the metric conversion has gone much better in Australia, buts a far cry from no use in any shape or form.
The important point from that wiki to note, though, is the line in the variations bit about things being built for the US.
Nuts & bolts, TVs, printer DPI, car wheels, etc are all in imperial not because we like it, but because if we dont take advantage of US manufacturing we have to pay significantly more. We'd prefer these things in metric, but not so much that we're willing to pay double the price - we dont have a big enough population to match the economy of scale US manufacturing gets. These things are made for the US, which is why theyre not metric.
We could in theory just convert the measurements, but you get weird numbers like a 59.69cm LCD (my current 23.5" monitor), or a 1.0117 hectare plot of land (2.5 acres... and that hectare measurement is rounded off). Its possible, but very awkward for advertising.
The only ones Id say people use out of choice are feet and inches for a person's height, and older generations will use pounds for a person's weight.