The environment changed. When I graduated it was an expectation that if you did your job you could work in the same place for forty-five years and retire, that you would have healthcare benefits.
While that turned out to be an illusion, it was still an expectation. People hung-on because of healthcare for the kids or because they were too old to start over.
Now there is not even the illusion of working for the same firm for more than five or ten years. Even if you stay in the same position the parent company changes and your "time" gets re-zeroed.
Changing your job more often than your cell-phone plan is rational in an environment where there is no loyalty back to the worker and the only way to get ahead is to change jobs.
I admire their cajones.
