It's easy, because of the proximity to the States and the fact that we still have generations in Canada that were alive PRIOR to metric who have handed it down, we're more or less raised with it. I can't speak for others, but I can pretty freely convert between the two (at least very close, I can't completely convert Celsius and Fahrenheit in my head).
But yeah, that's pretty accurate as to how everyday measurements go here. I'm trying to think of others, but I think this covers most/all of them.
A big reason is, at least for me, I'm one generation removed from someone who lived when Canada was on Imperial. It'll take a few generations to get rid of it. You can even see it in the replies here, as people who are certainly younger than me are talking about how they're using metric exclusively for things that I still swap between.
That's the ONLY reason. I'm quite fond of metric.