Milk-shakey

In the kitchen, calmly unpacking the shopping, I have just put the carton of milk beside the tap and the washing-up liquid in the fridge.

My question is, why do I never do this in any useful way? Eg putting the 48-page article about the structural implications of the decline of liberal internationalism in the fridge and the large box of Magnum ice lollies next to me on the sofa? Why?