Yeah, yeah, yeah, in a perfect world that road would have a bike lane, and drivers would cheerfully slow down to 10 mph until it is safe to pass with a wide berth. We don't live in that world, we live in this one. That road will never have a bike lane in my life time. Most drivers on their way to work are focused on getting there in the least amount of time possible, and are barely aware of their surroundings. Anybody who takes their small child on a bike during morning rush hour in that environment is an irresponsible idiot, nothing more. If I can't legally stop him from endangering his child, I will be extra careful on my way to work, and will make sure that I am not the one who hits them.