I prefer self checking, but I also get frustrated when people who can't handle it are in front of me moving slow.
I just find its faster.
I have realized after checking that something did not ring up occasionally. Whoops.
Walmarts around here have recently put in new machines though, and the new machines are complete trash. Parts falling off and they are not even a week old, the touch screen is completely unresponsive unless you basically pound it with your fingers repeatedly, and the scanner is constantly double scanning because its too sensetive. Like just recently I was buying some markdown food and the markdown label didn't completely cover the real barcode and it dinged teice rapidly, adding both to the order. Also, it asks EVERY TIME if you want a printed or texted reciept. Just print that off, I assume you can attach my email to my debit card number, you can attached that I want a printed reciept every time.
Total side note, from the article, is Five Below really considered a "Discount toy retailer"? They have other stuff.