Was in Fairbanks last weekend and it was -15F. So, having Fahrenheit staying positive for weather in US, is not really an argument. I am fine with Celsius based on water (0 freezing and 100 boiling). But I get that changing is confusing when you have adjusted your whole life to a system. If taught at school and displayed, in half a generation we could move to metric. Like others said groceries are already there.