Step 1: Need for quiet time.
Some thinkers prefer burning the midnight oil because they believe the quiet hours of the night are ideal for concentrated work. The peaceful environment helps them focus better on their ideas.
Step 2: Effectiveness of the midnight hours.
Great thinkers feel that they can only produce their best work during these hours when there is little distraction. The solitude of the night enables them to think clearly and creatively.
Step 3: Conclusion.
While some people argue that midnight is the best time for thinking, it is important to note that working late at night might negatively affect one's health.
Final Answer: \[ \boxed{\text{Some thinkers burn the midnight oil because they find the quiet hours of the night ideal for concentration, allowing them to produce their best work without distractions.}} \]