Why does America still use the Fahrenheit system to measure temperature, when the rest of the world uses Celsius? I figured it was because we are lazy and don't want to learn a whole new system. Vox looks more deeply into the question.
Fahrenheit is just one of the ways Americans are holdovers for imperial measurements, when the rest of the world is using the metric system. And Americans will stay on the imperial system until someone finds a way to make the conversion profitable. -via Laughing Squid
Temperature would be an easier switch at least, as it is mostly a relabeling. But I still prefer temperature measured in electron volts. Room temperature is 25 meV, and you probably don't want to go outside if it is below 20 meV or above 27 meV.