You just never know, I had a work friend who was a Senior FO at a large airline, he killed himself by standing in front of a train. It turned out he had just been in court and had name suppression lifted. He had been charged with multiple accounts of child abuse which he carried out during long haul trips around the world working as an ambassador for the airline in orphanages. No one at work knew anything about it or that he had been cautioned 2 weeks before and that he was in fact arrested in the work car park. people kept saying ‘he was such a nice bloke’. No body knows what goes on in other people’s worlds. Pilots are not immune to having the odd psycho in their ranks.