Haha I was wondering if this part was unclear but assumed it was obvious from context, that the cart opener can be removed from the coin slit. Imagine leaving your keyring on your cart... yikes!
The reason my wife (I have coins) uses them is that it's just easier to access. No need to go through your coins (if you have any), you just put it in.
> Imagine leaving your keyring on your cart... yikes!
While you're shopping? That's not a big deal.
When you return the cart? How are you driving home without your keys?
I guess Europeans might be more likely to not take a car to the grocery store, but I would prefer to use a basket over a cart while shopping in that case... I'll know when I'm done shopping when the basket hits my limit of how much to hand carry.
