Poll
27%
27%
45%
I guess it all comes down to what you're brought up with.
Being British, I have the luxury of growing up with both imperial and metric systems.
I prefer miles for long distances and metres/cm for short. Feet and inches for height (people). Stones and pounds for human weight. Grams and kilograms for most other weights. Pints for milk and beer... Litres for pretty much every other liquid.....
Always Celsius though. (Although can freely convert... as my parents still use Farenheit.)