Mensa, just to give you an example of the real world: A South American captain will face all the bad things you mentioned with no bidding system at all, 8 scattered days off over the month for U$4.000 and from that amount he'll be deducting income tax, rent or mortgage, children school fees, health insurance, electricity & water fees and more.
They have to drive themselves to work no matter what time of the day or night even against the law, for the night example.
Cabin crew are forced to fly over legal duty limits and often are taken from family reunion to fly in their days off. And they go, otherwise they are fired immediately.
Cabin crew will make net U$600 a month.
Do the maths. I'll let Asian issues to another day.