A lot of people love brands and pick the one they last remember - which is why advertising is so powerful. It maybe sound cheesy/irrational/unbelievable but it's true and there are 100s of billions in market value built on it.
There is even a hidden logic to picking a brand product: when I recognize a brand, chances are high that if I had read something scandalous about that brand in the past I would not fail to make the connection. Whereas when I am looking at a noname with a "brand" as recognizable as an IPv6 address, there is no way I could make the link between product and something bad I might have read about it in the past.
"It's famous, I would have heard about it if they were all duds"
I actually do this, more or less, and consider it rational. For a large number of household goods, I really don't care about them past some baseline quality threshold. So if something worked last time and the price doesn't seem out of line, I'll use that. I generally don't remember brand names for most of these things, but generally can pick out what packaging looks like. And I'm sure advertising influences my first-choice and whatnot on the margin.
I'm sure paying attention would save some money, or, who knows, I might even be "delighted" by a "new" "product experience", but I'd rather just not think about it.
