I know you're being facetious and it would obviously be silly to ban them. That said wearing headphones/earphones while walking around a city, for me, would reduce my situational awareness to a degree I would absolutely not be comfortable with. I know plenty of people are comfortable doing so but, while drivers and road design almost certainly bear the lion's share of the blame for pedestrian injuries and fatalities, distracted pedestrians don't help themselves. (Just the other week, I saw a person come super-close to getting hit in a parking lot as they were obliviously walking across the traffic lane buried deep in their phone.)
I once saw a pedestrian step out in front a speeding police car with lights and siren . . . I guess because the walk light turned green? The police car had to slam on its brakes and honk before the idiot noticed it.
