Absolutely. Especially old folks:
Falls are the leading cause of fatal (Kung, 2008) and nonfatal (Alexander, 1992; Cleveland Clinic Health System, 2004) injuries to older people in the United States. More than one-third of adults ages 65 years and older (about 12 million people) fall each year (Hausdorff JM, 2001; Chang JT, 2004).
Yup. Just think of all the lives we could save by wearing helmets 7/24.