Celsius, or Centigrade, can be read in tenths fairly easily on a analog thermometer, which is more precise, than Fahrenheit. Also, °C is the standard in the sciences, even computer science(measuring system temperatures) in the USA and the World. There was a push at one point to convert to metric in the USA, but there was too much resistance. I don't find metric difficult at all and I was raised in the USA...of course, I had a lot of science coarse work.