15 years The Greens, 10 before that Independent, 5 before that Labor.
Why ? Because the nations political and economic policies are based on cruelty, exploitation and entitlment, so at least I don't have to support that by enabling it with a vote.
The Greens policies are more likely (not all but more) to be based on science, the enviorment and/or kindness
I don't believe The Greens are radical enough but my hope would be the Overton Window could be moved if there was a much bigger swing to them, so we can at least discuss the more radical policies that are needed without being shouted down by conservatives.
I would always vote, I have no real hope that will change anything but If I am bothering to Vote I might as well do the right thing
I'm 58, I hold some pride in knowing I have NEVER voted for a winning candidate in any election I have ever voted in, it's not me helping cause this fucking mess by continually voting for heartless grifters.
"I did not mean that conservatives are generally stupid; I meant, that stupid persons are generally Conservative" - John Stuart Mill
Edit: I will often Vote for other small parties in the Senate, as well as Greens.