Child of a Metal God

The question isn't can long division be useful, of course it can be. But is it more useful than what you could have been learning instead? More importantly, is it more useful for kids today, who (once they hit the age of needing to do math for real) will never, ever lack for a device with more computational power than the faster supercomputer when we were kids? Instructional time is a finite resource. We should be rejoicing that new technology is making old subjects irrelevant, as there are always 10000 other subjects that would also be good to be teaching.