It was a really touching episode and it made me reflect. For example, was Discord evil without a reason? Being alone for more than one thousand years would become you into a vindictive being. And I´m sure that his aspect was the main reason of that. And something important, it looks like Discord hated being alone, more than he loved chaos. Because when he had to choose between Fluttershy´s friendship or chaos he preferred Fluttershy.