This really does hurt me to see. Korra has been broken down at least once every season. Ever since she left the compound at the South Pole. The world can be so cruel and judgmental to us ordinary people. Imagine what its like to be near godlike in the eyes of most and yet all you hear is criticism, hate, wishes and attempts at your demise. Now imagine you are a teenage girl going through this. To top it off this is your first experience of the real world outside of home. How could you not be broken by the end of this?
This explains why Aang couldn’t firebend or earthbend at first, but I don’t get why Korra couldn’t airbend. Did she not have enough love in her life because I don’t think she was dealing with any form of grief….. maybe her time in isolation had something to do with it?