Come to India and just see into the Air India B777 cockpits. There are FOs that are just 21 years old ( including ladies). By the way i am also a B777 pilot, i started on the B777 at the age of 27. i started working as an Airline pilot at the age of 19, my first job was on the B737-200 and about 2 years later was selected for the 747-400 but never flew it ,they later sent me to the Airbus 310 fleet.