Be glad that your temporary visa doesn't expire. That's... not common in other countries.
Be glad that your temporary visa doesn't expire. That's... not common in other countries.
Edit: and I just want to make clear that I'm not criticising the Australian government in any way with these comments. Please don't deport me.
I do have an EU citizenship as well, and in fact I'd lose that if I became an Australian citizen.
(the Permanent Resident visa can be renewed online in about fifteen minutes when it expires, they just want you to attest that you still live here)
Technically you don't have to renew your permanent residency unless you leave Australia (but then you have to renew your temporary visa, too). Also you can apply to be a citizen after ~4 years of permanent residency while you can't apply if you only have a temporary visa.