You can't teach anything to anyone who's not willing to listen. You can try, and you can succeed, but the success does not lie in your effort alone, it lies also in the other being's acceptance of your ways. If the acceptance is not there, it's not there. Can you force acceptance? People have chosen death, torture and brainwashing over it. You may be able to drive someone in a corner, but can you take away free will? If you can, the couldn't you also make people adopt destructive ways? You can give an idea, the other person can take it, but they can also reject it. You can pressure them, by words or by methods I said, but it's still pressuring, and it's up to the other person what to do. If the world worked some other way, then we'd be just reprogrammable machines with transmitting capabilities, right? You can make people sense things, but you can't make them make sense out of it. That why different results in school tests for everyone, this is how I believe it works, even though there's always probably finer and and unseen-to-me -mechanisms at work there too.
Freedom is relative. You say that the germans didn't have a room to disagree during the Hitler period, but if you look at it closely, they did. The alternative was just worse, and the conditions seemed to be much better for those who agreed with Hitler when he was in power. Death is always an alternative, so is leaving the place you considered home, so is abandoning those who you considered family, so is disagreeing with them. They had basically three chains of events to choose from, the ordinary folk of that time and place: agree with Hitler, silently and in shadows disagree while remaining there, or flee. Some of his countrymen may have even physically fought against him (not him directly but his plehtora of subordinates) and perished or escaped him. You say they didn't have freedom, true in a sense, but if you look at it closely, they had every freedom we had too, just different consequences. Rebels, those who go against mainstream, don't often have it easy, and that why it's not a desirable wave to ride on. All unknown and things that are different or unexplored are often being avoided or deflected, or perhaps digested more slowly.
Most people, including me, can agree that most things like depraving women, or anyone, are not acceptable. Not just in this day and age. But I think the change should occur from within, not without, because only the change that comes from within can be truly fruitful. Because the change that comes from within is more prone to change your (deeply) subjective side too. For example, I'm a fierce animal protector (yes, in real life), and I believe that more people should provide their basic needs themselves partly because of the animal torture point of view (deep bias, you could say religion in my case). I'm also not a stranger to taking life. But I would never take a life for the sake of my ideals. The ideals remain there, whether I or anyone else is dead or not. The ideals indians (native americans) held still remain in many people's hearts even if those people themselves didn't choose to spread them and preach about them, people have found them in their own ways. I have faith that even if every person's life is extinquished, they remain. I could use my ideals to do destructive things, as could anyone, and say that "it's not right you do this and this to animals", but I simply don't believe in the chain of events that allows you to kill because of ideals. This is something you could call a religion that forbids to kill because of religion. "The most immediate survival" is the only license to kill for me, and not even it, if it means taking life from something that I'd rather see living even if I die.
I suppose since you're from Australia and have some knowledge of the agriculture, you might know who Bill Mollison is. He's australian too and I think he, if anyone, could help you improve your farm's working conditions. As far as I know, he's done much of his experimenting in Australia and similiar environments (Africa, at least that's more similiar to your than my country environment

), and I've heard many promising reports. You should check his work if you still have that farm going. I didn't pay much attention to the parts in his studies that you might find interesting, but there's much about storing water, which might be one crucial point in your end of the world.
I think it's only good that you can decide for yourself what you do with your life instead of money dictating it for you, but you know that the world isn't like that under the surface. Someone has to do those things that get done. The basic necessities at least. For now it'll be the ones who need money the most that at least try to get into that loop, and those who need it the least are more free to get out of that loop. I understand the value of money as trading method, but I think it's been overused, when you get everything with it instead of by yourself. It doesn't have to be either-or, there could be some balancing done. Most of us do have those basic commodities, but many dont have so much of a choise what kind of a work they do. The factory I'm in is quite decent, but not me nor my workmates would be there if we had a choise in the matter. We're there because we were born to be money-slaves and didn't do enough about it in our lives up to this point, and because like us, other people rely on others to accommodate their basic needs. I'm not bitter, on the contrary maybe, just a bit frustrated at times, but I wish people could produce their needs easier. When it's so easy to spot "you could do this better"-things in the system, and the only thing stopping you is money (currency which is supposed to help people), property (there's no real property, we just loan everything and pass it on when we die, it's all a loan) and a complicated system of rules (that were made to help people). Or rather, people holding on to those things. And your own will to maintain a more comfortably lifestyle.
Sorry for the long rant, hehe. Off-topic too. But no matter what we deserve, it's always a different story of what we get. There will be differences in what we get, I dont think that can be changed. But we should have a choise in that matter, which most people dont have too much, and I think it's usually about not knowing that something better exists and is in your reach, or that you're not yet extending your hand for that thing even though you know it's there. My friend from asia tells me at times how things work in his country, it's pretty rough out there compared to western "civilized" environment, and I think normal people in my country would only think "that's plain stupid/primitive", or that "I can see where they could improve their way of thinking a lot", and I think you can see things in my words in similiar way. If so, I hope you voice out some of them. I think you have many good ideas.