Clearly you don't have a mirror. If you had, you'd realize you often don't need to turn your head.>>1573417
Although you get a beter view, I noticed that having my mirror outside of my handlebars is impractical. The mirror breaks off when the bike falls down, and your bike becomes much wider.>>1573438
Depending on the road, they can make your ride much more enjoyable. I need to be able to watch what kind of traffic is coming up behind me. Without it, I would have been killed three times while riding in Africa or south america, where half of the drivers are drunk or high and where brakes on cars are optional.