For human experience, 0 should be very cold, and 100 should be very hot. That makes sense. In your system, 0 is moderately cold and 100 is dead. Also Fahrenheit's specific degrees were originally based on 64 integer gradations between fresh water freezing temp and human body temperature which could be done fractionally once you established the relatively constant endpoints.
I guess if you want accurate measurements you shouldn't use feet, but is great for estimating... You can visualize the length of a foot pretty easy and the length of an average adult male's pace is just about 2.5 feet which makes for a nice 10ft per 4 paces. There are advantages to every system, why do you think the one based on arbitrary science benchmarks and decimals is better than the one based on human experiences and fractions?