Apathy...

Apathy, impassivity, and indifference all denote a lack of responsiveness to something that might normally excite interest or emotion. 

Apathy suggests a puzzling or deplorable inertness or lack of passion. Impassivity stresses the absence of any external sign of emotion in action or facial expression, as in “teachers frustrated by the impassivity of their students.”

 Indifference connotes a lack of interest in or concern about something, as in “the company’s apparent indifference to the needs of its employees.”