Here's why:
* Lazily: Implies a lack of effort, enthusiasm, or motivation. It suggests someone is doing something in a slow, sluggish, or indifferent manner. For example, "He lazily finished his chores."
* Leisurely: Suggests a relaxed, enjoyable, and unhurried pace. It conveys a sense of freedom and enjoyment in doing something. For example, "We had a leisurely stroll through the park."
While both words relate to a relaxed pace, "lazily" often carries a negative judgment, while "leisurely" is typically considered positive.