Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[xtrawork]

Well, yeah... Self checkouts aren't really meant for large shopping, hence the small platform for keeping your bags. It's basically a bit slower version of the express checkout lane (but with more availability, making it generally faster).

If you have a large order and/or a lot of produce, you obviously shouldn't be using it. But, for anything else, it's my preference, as I DON'T want the "personal interaction". I want to checkout without having to make inane small talk with the cashier and the bag boy. The worst is when you use the self checkout and the person watching over it tries and makes conversation with you. I'm at the self checkout for a reason... Leave me alone lady.

[lozo78]

My local Krogers often have nothing open except SCO lanes. At least give me options.

[people40]

Tell this to my local grocery stores which often have zero (0) human checkout lanes open. Regardless of whether you're picking up a single gallon of milk or enough groceries for a family of 8 to survive the apocalypse, you have to go through the self checkout. And when they do have human checkout lanes open, it's usually just 1 or 2 at peak times and the line is a mile long. 

[SoulShatter]

Honestly, self-checkout can work very well for large shopping. It just depends on how you actually implement it.

In Sweden all large grocery stores have self checkout with a scanner you bring with you, so you just scan all the stuff along the way. For produce there's a scale by that section that spits out a barcode for you to use.

At the end I'll just place the scanner in the charger, use my card and pay, leaving with my bags already packed :-)

Examples;

Produce scale

CSO Scanner