On the "fun" side, a bunch of 4chaners were intentionally poisoning the results with swear words.
Maybe the average HN'er doesn't do any serious grocery shopping, say to feed a large family, but there's no way I am taking a cart full of groceries to a self checkout line, I'd rather wait. Sure, for buying 10 items or less, they are OK.
I prefer cashiers who are paid well to do their jobs, rather than subsidizing companies that refuse to pay living wages and just threw in the towel. Try checking out an ALDIs sometime to see how truly blissful being rung up at their checkout lines are.
However, I do occasionally need to get just an item or two. If I'm at a store that has a self-checkout, it seems to be faster for that.
Also, the checkout at ALDI is an impressive demonstration of efficiency. CostCo seems to have a similar philosophy.