And how exactly shopping cart force you to buy more stuff? Do US shopping carts have some built in device giving electroshocks unless they are filled to certain

And how exactly shopping cart force you to buy more stuff? Do US shopping carts have some built in device giving electroshocks unless they are filled to certain capacity? I decide whether I take cart or basket depending on my shopping list, obviously if I am going to buy heavy things I am not going to carry it around shop in basket or if it's one of those shops with very small area behind checkout it's better to put stuff back to cart. Best compromise is bigger basket on wheels (which can be pulled) for medium purchases, no need to bother with coin, no need to carry heavier stuff in hand and no need to return it back to inconvenient location plus in theory it gives you time to organize your grocery later after checkout. Btw I don't have car, so I carry everything in backpack, either big (50-60L) or medium one (~30L) and eventually lighter things (bread/cakes/chips etc) in big plastic bag, cart vs basket have again nothing to do with this. By your logic you should take with you only limited amount of cash, if you have such bad self control that you need to limit yourself with basket size and honestly I think you should seek some psychological help if your self control is that bad.