Remember the Swissair crash at Athens, 1984 I think it was ?
A DC-8 went off the end of the runway. Greek police removed the 3 crew from the smoking flight-deck and slung them in jail, declaring them to be guilty.
Ifalpa made strong representations without effect, so a worldwide boycott of flights into Greece was organised within a couple of days through Ifalpa's sister organisations like Balpa. The crew were released. It subsequently turned out they were approaching a wet, greasy runway with a significant tail-wind - none of which had been mentioned to the crew - and the infamous drop at the overrun end of RW 16 had not been filled in as Icao had asked of Athens many years before.
THAT is when you need Balpa, and anybody overflying some of our more excitable neighbours like Greece, Spain or France, as well as anybody going further afield, might need Balpa's services then.