Being from Texas, it makes a lot more sense to use a temperature scale where 100 is the benchmark for determining whether it's hot. It just doesn't sound right to say that it's 38 degrees outside in the middle of summer.

On the lower end of things, zero degrees C does make more sense for determining when it's cold - Freezing. But since we hate the cold in these parts, the 32 degrees makes us feel a tad warmer than we should.