念旧是一个坏习惯忘旧是一个坏感受
[niàn jiù shì yī gè huài xí guàn wàng jiù shì yī gè huài găn shòu]
This username reflects a person's internal struggle with the nature of memory. Keeping memories is seen as a bad habit because sometimes it brings more pain. On the other hand, forgetting is emotionally painful too.