The feeling you're describing is often referred to as "apathy" or a state of "emotional numbness." Apathy is a lack of interest, enthusiasm, or concern about things that would typically elicit emotions. It's a state of feeling indifferent or detached, where you may not experience strong positive or negative emotions.
People might feel apathetic for various reasons, such as experiencing prolonged stress, burnout, or even as a coping mechanism to protect themselves from overwhelming emotions. It's essential to recognize and address apathy if it persists, as it can impact one's overall well-being and quality of life. If you find yourself feeling this way for an extended period, it might be beneficial to talk to a mental health professional to explore the underlying causes and develop coping strategies.