Not speaking for other places, but America is not made for bikes or pedestrians. It is actively hostile to them in the best cases, and filled with explicit murderous intent in others.
Drivers will actually, actively, try to hit you for daring to take to the roads. And you have to take the road because we have sparse or missing pedestrian sidewalks.
I wouldn't wish biking 3 miles in most American cities on anyone used to a properly designed nation.