Something you imperial-bashers need to understand is that the imperial system is not arbitrary.
Where the metric system was designed to be easy to make calculations with in a base 10 numeral system, imperial measures were designed to reflect common use and be easy to estimate without precision measurements...mostly because many of them were designed thousands of years ago, before we had precision instruments. The foot, for instance, has probably been used for as long as people have had feet.
As for temperature, whereas Centigrade was calibrated to the freezing and boiling points of water, Fahrenheit was calibrated to the freezing point of water and average human body heat. In other words, the temperature is calibrated to 2 useful temperatures, making is a handy estimate of comfortable temperature range.
It isn't like you can't do science in Imperial units. It's just that the you need conversion coefficients, which are annoying, but not difficult. Besides, American scientists and engineers work in metric anyway. It's just the common folk that use imperial, so why worry?