While I understand that some have poor experiences and feelings towards airlines, the fact is, everything is explained to you before you're employed. You know the conditions. With a tiny bit of research, anyone can see that QF is no longer recruiting full time, offering redundancies almost yearly & that your chances of transfer to full time are non existent.
As far as I'm concerned, if you take on a casual role & expect more, that's your naivety.
When it comes down to it, QF is a business & they're not in a good way at the moment. They're doing what they need to to ensure that they don't go under like so so many Australian airlines have.