One more thing. You mentioned doing something 'that actually matters.' Well that's in the eye of the beholder and something you have to figure out yourself.

Your flight might be one that is remembered as the flight that got them there in time to see a baby born or a loved one before they passed away. Perhaps your flight is the flight that brought the much needed medicine or human organs that have been so desperately needed.

These types of things don't happen all the time, but they happen more than you think and really matter to someone.