Why is the power to pardon rarely used?

The power to pardon is rarely used because it is often seen as a controversial and politically sensitive action that can invite public scrutiny and backlash. Additionally, presidents may prefer to focus on legislative solutions or judicial reforms rather than individual cases. Furthermore, the complexities of legal and ethical considerations surrounding pardons can lead to hesitance in their application. Lastly, many presidents may reserve this power for exceptional circumstances, making it less common in routine governance.