1. Discuss the psychological or social reasons why people might purchase unnecessary items, such as impulse buying, social pressure, or advertising influence. 2. You can also mention personal experiences or observations related to this behavior.

1. 討論人們可能購買不必要物品的心理或社會原因，例如衝動購買、社會壓力或廣告影響。 2. 您也可以提及與這種行為相關的個人經驗或觀察。