It sends shivers down my spine to think that airlines want to eliminate the co-piloting requirement in order to reduce costs. It would be increasingly stressful for the pilots, increasing turn-over, burnout and the risk of errors during flights. I would never fly with an airline that makes a single pilot take the brunt of a flight longer than 1 hour. Hell, even quality long-distance bus travel and truck hauling companies have drivers work in tandem, switching every so many hours.