In some countries, like Japan, riding on the sidewalk is standard and it looks like you would even get blamed for driving it on the road.
I love bicycles but I cannot see myself use them for anything other than the occasional exercise. Going on the road is just way too scary for me.
I was wondering what the average HNer's opinion would be on this topic.
Edit: Wanted to add a personal story. I remember that once I was walking on the sidewalk and as I was about to look behind me to turn (from the outside to inside of the sidewalk) a bike flew past me at bone-breaking speed. While I'm 100% for allowing them on the sidewalk, we definitely must educate people to look when crossing INSIDE THE SIDEWALK. I imagine a kid would've just turned without looking and probably get killed.
I don't bike anymore, because walking is better for my posture, I have limited time for exercise, and I am able to walk to work, so I do that now.
If a cyclist is going slowly (under 10mph?) and conscientious that pedestrians rule, I have no problem with them on the sidewalk. Bikes can stop quickly. I have much less tolerance for the speed demons (as I once was) in their fancy kit who think they rule the streets (as I once thought, until I retrained myself to reconsider cars as "people driving cars" and pedestrians as people moving in the most primal way, and thus worthy of the most deference, including necessary mobility devices, not including "luxury" mobility devices which generally include bicycles). If I had my way, cities and roadways would be redesigned to make it really easy for bicycles to use. "If you build it they will come" approach. I've biked on highways in the western USA and in Japan, and felt safest in Japan, maybe because I was glaringly different, vehicles tend to be smaller, and automobiles don't have the primacy I observe they do in the states.
I often prefer biking in the road because I want to get from A to B and not take some meandering path as many bike paths are. I didn't bike for fun, I biked for transportation, to save money on gas and car repairs, and for my health. The fun was incidental.
Move the bikes to the sidewalks and get rid of the bike lanes that both drivers and cyclists hate. Also saves everyone's tax dollars since sidewalks are already there, unlike bike lanes that need to be newly marked.
Reaction II: In the "wealthy & pro-cycling" city I'm most familiar with (Ann Arbor, MI), there often is no sidewalk. Or it is too poorly maintained to be safe for cycling. (You'd be dodging overgrown shrubbery, low tree limbs, etc.)
In dense cities, bikes on sidewalks are obnoxious and clearly a safety hazard (note: I am a biker in such city)
I cities with very few pedestrians on sidewalks, it could make sense (especially if the sidewalk is large enough to allow for a split)
I'm all for it -- bicycling, but not on the sidewalk.