That's how I was raised. Even on an Army base, you looked both ways before crossing. But downtown Minneapolis - jaywalking, crosswalk, it doesn't matter. Most people do look before crossing, but there's a small percentage of people who really do seem bent on crossing RIGHT in front of a vehicle.
Yes, for RV'ers it seems like we have to really look around because, well, some people are just...ignorant. I never had to do a complete panic stop while towing, but I have had to slam on my brakes fairly hard to slow down to avoid wildlife.
I would surmise if some pedestrians were forced to go through a simulation of a 10,000 lb load slowing down from 45 to 0 and having a simulated pedestrian in front of them - they might think twice about their behavior.