i'd like to buy a micrometer becuase i have this obscene obsession with collecting tools. if i were to buy a micrometer, i'd like to get it in metric becuase i learned metric in school, i live in Canada, and all the volvo manuals are also in metric. i'd like to buy a micrometer because i'd use it for other things. Like the saying goes: when you have a micrometer, everything looks like it needs adjusting a millionth of an inch, or micron, if i went metric. if i have four disk brakes, i'd end up using it at least four times (once for each wheel!) until someone borrowed it and ran it over with their car.

but you do have good points.