Sometimes my almost 4 year old rides. Not usually at the mall or any place like that, though. (I try not to stay at the mall long enough to "need" one!). It's more likley at the zoo or if she gets tired on a long walk. We have a double stroller and sometimes my 18 month old rides (if it's a short walk and doesn't seem worth getting him on my back in the Ergo) and sometimes she'll want to hop in, too. I would also say. . .she's not the most graceful child, so if she's having a snack or a drink and we want to keep moving, I'd prefer to have her riding. She takes a lot of falls, so I want all her focus on walking. She walks and runs plenty, so ocaisionally wanting to ride isn't a big deal for me. I figure that i would probably still be wearing her sometimes if I didn't have my 18 month old (he gets priority mom riding time), so letting her ride doesn't seem much different to me.