Any system of measurement is a subjective standard which has no real effect on the task at hand (apart from delivering results in different units from another system).  And while the Imperial system came about more, shall we say, organically than the metric system's interlocking definitions of units, it's still a perfectly usable system.  That you can't imagine using it says more about your inability to speculate beyond familar territory, than about the usefullness of one system over the other.