Fahrenheit is very intuitive if you are in Danzig in one particular year... [0] otherwise.. It's a historic accident. If you want to root your measurement system in human experience your measurement system will be outdated in a couple of decades. Because humanity changes! That way there will always be old/antiquated/historic units. Metric basically accepts that and uses easy to convert units and leaves the intuition forming to the humans gathering the experience

[0] Apparently the story is disputed.. But the way I was taught it was: 100F == typical healthy human and 0 F == lowest temperature in Danzig in the winter 1708/1709. This makes it (by construction) a more natural fit to human experience (especially one in northern Europe) https://web.archive.org/web/20131015045624/http://www.deutsc...