shopping with children

I have just one child and ever since he was just a kid he loves shopping with me and even now that he is 23 he still loves to shop with me. He enjoys doing it just as I do. He is already working and he shops alone in many instances but whenever I go to shop he still wants to tag along whenever he is at home. I've seen many parents tagging along their children and even putting them in the shopping cart. I wonder if they could ever concentrate on their shopping if they have more than one kid with them.

My son takes a lot of interest to do shopping. He goes with his mother and helps carrying the bags. He is now 13 and he has been accompaniying her mother from 6. I have told my wife to include 1 or 2 small items for him in the shopping list, so that he too can get involved in the shopping. Except during the examinations, most part of the year he is there for shopping. This helps them to calculate the amount, additon, subtraction, what is the scheme amount, what is MRP(maximum retail price), what is expiry date on the product etc.