Others think it has medical origins, historically believed to be a way of protecting against the plague or respiratory illnesses. Still, many admit they do it out of habit, even though the original intent has been lost in modern times. Still, the question remains: what makes the pineapple’s sweet, tangy flavor so universally appealing? The question remains: why do we feel compelled to constantly check our devices? Note: The image above captures a typical moment of curiosity and confusion—why do we ask these questions at all?