I would not be so quick to judge others really.
Some may not have another shot at working any other place for unfortunate reasons and have a family to feed.
I have flown with some wonderful and extremely competent colleagues that would never be able to find another job somewhere else simply because they carry a passport to a country that is destroyed today. In some cases they have never even lived in these countries, but have been victims of being born with these nationalities.
While I am fortunate and extremely grateful that I am not in that position, I think it says alot about you if you judge others or find them to be "worthless", or "spineless" while you haven't the slightest clue what they are going through.
Instead I choose to feel blessed to be in a better position. For you gents that share that sentiment and feel that sense of superiority, I sincerely hope that life doesn't teach you the hard way that you could also be on the other end of the spectrum.