You want a single reason? Here's one. Getting an airline pilot job is just too damn easy. As short as 10 years ago, a pilot would have to flight instruct for years, then go fly 135 for another year or two. Then if he didn't kill him/herself flying checks in a C401 at night single pilot with no radar, he applied (and usually paid more $) and got a job where he sat in the right seat of a turbo prop for another 2 to 3 years. Then after 5 to 7 years that pilot would go the right seat of the jet or captain in the prop.
Today.... graduate, get your license and you have a job. There is no respect for the position. What use to take years of blood sweat and tears, is now an expectation or many feel an entitlement.
rant complete.
Stick
So the pilots on America West 556 had the right to do what they did because they came into the industry when it took years of blood, sweat, and tears? The industry has changed and younger pilots are taking advantage of it. Why assume that because some are hired with low times they don't value their jobs?