Not only was I never harmed whilst traveling to/from school (except for one time when I fell off my bike while riding to school when I was 6 or 7 years old in Venezuela and I had to get stitches on my knee—I've still got the scar to prove it), but today I live mostly without fear and don't subscribe to most of the BS that fear-driven people do. Depending on how you look at it, I seem to have turned out fine. I also spent most of my childhood playing outside eating dirt, and go figure, I have no allergies or immune problems.
American parents today who coddle their children are robbing them of learning and growth experiences they deserve. Experiences which, in my opinion, would help make them better people. More tolerant, more empathetic, more intelligent, and healthier.