Driving down the cost of air travel...
...by employing overseas agency staff with little grasp of the English language.
Their cabin crew also seem to have an inability to smile or be polite - but that's just my experience.
The last time I flew with them, I vowed it'd be just that. They're all a miserable bunch of people. Hardly surprising given the wages, and pressure they can be under to do everything they need to so quickly.
OTOH last time I flew with EasyJet they were all having a laugh with each other, and the passengers and it made the flight much more enjoyable. Gotta be worth the extra fiver!