The distant future of liberty
There will come a time when no one in the entire Universe will even remember the planet Earth ever existed, much less that there was once a species of bipedal ape, native to Earth, who debated and fought over the relative merits of slavery versus liberty (but called it "government versus anarchy").
However, this time, this species, and this Earth are very important to me now. They are mine, and they affect my present and the future of my children.
I know without a doubt which system I would prefer to live in and see my children inherit.