Metric system

My dad, born in 1921, (Canada) thought the government was crazy to switch to metric. He pointed out that the country had been surveyed in Imperial measure, miles, not kilometres, by Range and Section. He said they would never re-survey, so what was the point of switching?
I, too, was raised to learn Imperial measure and found it challenging to switch. Sometimes I still do mind calculations to figure out what I am doing. Measure seems toughest for me - how long is 7853 centimeters?? I'd probably need a calculator to figure that one out, so I could actually envision what 7853 cm actually looked like!
But I have to speak metric to younger people. They don't understand Imperial so I have to translate for them! LOL