I think you are a horrible parent. Do you know that children have been seriously injured and even killed in falls from the back of the cart? I have seen a child about 2 years old fall out of the back of the cart and had to call an ambulance because he was bleeding so badly from a head wound. He ended up having a skull fracture. I think it is irresponsible of parents to even take the chance that their child could be hurt. So if you do allow this then why? And what makes you think your child won't be injured?