It is ironic that the door meant to protect the pilot is what prevented him from saving the passengers, but there was nothing that could have been done. Pilots are thoroughly checked before being allowed on a plane just like any other citizen. However, these physical screenings cannot find the emotional baggage being carried with them.
This tragic event may have altered how people see flying, but it is often forgotten that plane crashes are very rare. The media loves to report on the negative aspects of the world. However, this does not make the world a dangerous place where a person always has to watch his or her back.