When grocery shopping do you let your toddler push a little mini shopping cart?

I took my daughter to the store today, she is almost 4 years old. i took her to the grocery store, and they had those cute little mini shopping carts for little kids to push around. she loved it. i had the big cart and she followed next to me with the little cart. every one kept looking at us, and smiling. it was really adorable. any other parents out there do this a lot when they go to the store. ?