An hour is a popular unit for me personally. I measure my work and plan my day in hours (since pretty much all clocks use hours, not kiloseconds). I don't use

An hour is a popular unit for me personally. I measure my work and plan my day in hours (since pretty much all clocks use hours, not kiloseconds). I don't use seconds very much (with the exception of Unix epoch seconds, or a short experiment). I can't divide by 3600 in my head. I can, however, multiply by 1. Therefore, Watt-seconds (AKA Joules) are not as useful to me as Watt-hours and kiloWatt-hours.