I see this all the time in the cities where I have clients...
But, it doesn't top the family of 5 I saw on Saturday, pulling into the Visitor's Center lot in Concord Center. Both parents and all 3 kids (maybe ages 9-12?) not wearing helmets. It's fairly routine to see this where the kids are wearing helmets and the parents aren't, but, this was too much for me. As I rode by, I pointed to my head and said "helmet?" to the dad and mom. I am sure it made no difference, but I felt better!