What is the primary reason for pre-flight medical evaluations for pilots?

The primary reason for pre-flight medical evaluations for pilots is to ensure that the pilot is fit to fly. These evaluations are crucial in identifying any physical or mental conditions that could impair a pilot's ability to operate an aircraft safely. Pilots are responsible for not only their own safety but also the safety of their passengers and cargo. A thorough medical assessment helps to detect issues such as vision problems, cardiovascular conditions, neurological disorders, and any other health concerns that could affect performance in the cockpit. Maintaining high medical standards contributes to overall aviation safety by ensuring that only those in suitable health are flying.