People that buy something for no reason other than it's on offer do my head in. They don't want it, they don't need it, they don't use it, but because it's on offer they think they've saved money. Completely oblivious to the fact that if they didn't buy it, they would have saved even more money.
I've been sort of guilty of this in the past. Not so much 'just buy because it's on offer even though I'll never use it' but more 'oooh, I reckon that might come in handy' then it's sat in the cupboard/freezer for years (or, if non-food, is still sat on a shelf in the garage).
I tend to go in the supermarket at around the time they reduce the fruit & veg, meat, bakery, etc, not intentionally, but because it's after work finishes. You see the same people scouring the reduced-to-clear stuff every time, piling stuff into their trollies. They either have huge, huge families and eat like Henry VIII each night, or walk-in freezers piled to the rafters. And woe betide if you try to inch your way in to nab a bargain - the regulars have very sharp elbows and a telepathic understanding between themselves to keep non-regulars out.
