Love that there are so many here that truly appreciate that a child leash is sometimes appropriate! It is all about safety. And whatever it takes to make my parenting life easier, so I am a happier, more connected, more effective parent.
I last wore my oldest when he was 5yo (he is 6yo now). And DH wore him last year at the Miramar Air Show, when he was exhausted from a long and exciting day, and was never going to make it back to the car. So much easier than trying to carry a 40lbs child in arms, through huge crowds of people, while carrying all of our gear from the day.