I am always surprised at the fact that in stores who charge for the shopping trolley (£1, refundable when you bring the trolley back) they all get put back where they should and the stores who do not charge anything have parking spaces littered with empty trolleys no-one can be botherd to bring back where they belong. I think it says a lot about our society.
Just to make things clear, I am ennoyed at trolleys left everywhere, not the opposite!