Why are 300 cheap Christmas presents worse than one very expensive one?

TIS the season to be conflicted, fa la la la la, la la la LAH.
As the environmentalist George Monbiot writes of “hedonic stimulus that lasts no longer than a nicotine hit” and within weeks ends up in landfill — he’s talking about novelty Christmas presents like solar powered plastic dancing nuns — an Isle of Man woman is digitally tarred and feathered for the 300 presents under her tree.