emotional flatness is often a result of suppressing feelings for so long that you lose access to the full range of emotions. this as part of , where unaddressed trauma leads to numbness as a conditioned mechanism. that when pain becomes too much, your mind shuts down emotional responses to help you cope.
that flatness isn't the natural state of being human. We're creates experience the full spectrum of emotions, both positive and negative. how this contrast is what makes life meaningful. Emotional flatness signals that you've disconnected from your feelings to avoid pain, but this also blocks joy and connection.