I was chatting with a NZ SD on a loooonnnng flight. He used to work for EK, for 5 years.
As he put it, being younger it was 'fun' because they fly to so many places, however, rest times are much lower, maximum hours per month is much higher, their (physical) standards are rigid and people are fired because they are getting too old or less attractive.
In addition, there is a type of cast system in many of the countries they offer primary service to, and a flight attendant is often treated like a servant.
That being said, the people who will refuse to fly them for moral reasons are few and far between. Better planes, better service, 1 stop to almost and 2 city pairs in the world at discounted prices will most certainly keep their planes full.