When you fall while running, you don't have a mechanical contraption limiting your movement. The nature of riding a bicycle (or motorcycle) makes it much more likely you'll hit your head. People also don't fall as much while running as they do when riding: it's easy to hit a crack in the pavement and lose control on a bike.
> People also don't fall as much while running as they do when riding
Says who?
Just a couple of days ago I had a runner get past me while I was walking on the street, 2 seconds later she hit a bump on the pavement with her foot and fell down hard (she even made a loud splash sound as she hit the ground). No, she didn't have a helmet. Should she have?
At the end of the day, people should be walking around in full steel plate armour, for protection and safety. Or even better, not walking around at all. Bicycles should be banned!
> it's easy to hit a crack in the pavement and lose control on a bike.
No, its not. The person who says this probably hadn't ridden a bicycle in their life, or if they have, not often and not recently.
Bicycle wheels are EXCELLENT at getting over cracks, bumps, ditches, holes, whatever - as long as the attack angle is as close to 90 degrees as possible. It is the riders responsibility to make sure that is the case. Wider tires also help, lower pressures too... and high speeds, counterintuitively.
Of course, if you are afraid of falling or uncertain of your skills on the bike, wear a helmet by all means. Just don't think that it is "normal" and all riders are like that.
>2 seconds later she hit a bump on the pavement with her foot and fell down hard (she even made a loud splash sound as she hit the ground). No, she didn't have a helmet. Should she have?
Did she hit her head? Humans are hardwired by millions of years of evolution to protect themselves in falls using their arms and hands; they generally handle falls very well. Humans have not evolved to handle riding bikes, and using your hands to protect your head in falls isn't instinctive there like it is while running or walking.
>No, its not. The person who says this probably hadn't ridden a bicycle in their life, or if they have, not often and not recently.
This is just stupid and argumentative. Road surfaces are frequently bad and people make mistakes.
>Of course, if you are afraid of falling or uncertain of your skills on the bike, wear a helmet by all means.
Yes, because I'm sure you're such a perfect rider who never makes a mistake.