Really? I'm more than fit to be a parent and did a damn fine job on the 3 (including twins) I raised and toted around town. There was a two and a half year age difference and when my oldest one (son) was in his terrible twos and playing hide and seek in stores while I had the twins in a carriage, etc. it worked wonderfully. Of course, as soon as he got out of that stage, there was no need for it. While it might seem like a bad idea to some, it's actually MORE responsible than letting an child run loose and get hurt or worse.