"As far as people who come here and go back home, well they aren't immirgrants, they are basically guest workers."
I don't see anything wrong in Australian permanent residents returning to their home country for a period of time. With the current 5 Year PR Visa, that person has to return to Australia within 5 years, if not he/she will lose the reentry right and will need to apply for what is called RRV (Resident Return Visa).
