I drive according to road conditions, weather, traffic (including pedestrians), the limits of the vehicle I'm operating and visibility. In Ontario, the speed limits are so ridiculously low that it's almost always safe to routinely go 15-20mph over the limit. Generally speaking, the limits are more reasonable south of the border, especially as one heads west, so I rarely drove more than 10mph over the limit (usually at or around 5 over, while operating a lightly loaded Silverado).
What really annoys me while driving are people with no sense of lane-discipline. It's pandemic here, so I hate seeing Ontario plates when I go out of province. An Ontario driver is the one most likely to hog the passing lane, going side by side with a car in the right (or middle) lane. If I am passing slower traffic and see someone catching up to me in the passing lane, I find the first safe place to move over. Other drivers.. 1 in 10 if we're lucky. That's why I give them a honk as I'm passing them from the right (which is, thank God, legal here).
One other note about driving in Ontario. Signalling here is a lot different than in other parts of the world.. An Ontario driver will usually signal after he's made a lane change or turn or not at all. Some eager beavers will signal while changing lanes or turning. Signalling before making a turn is so unpopular here that you'd think it's illegal.