I do not wish to come across as brutish (though I think you are right and I apologize for any perceived rudeness). OP made a statement along the lines of "These stores are useless". I could of course say that he is wrong or a liar but what I wanted to convey was that his experience was only an experience and not an absolute fact.

> But it's rarely useful.

This is a judgement, dismissing an idea as ‘not useful’.