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But there are most certainly other ways to get energy, by using natures forces, I was searching for one, but I didn't realise magnet fields give friction as well. Solar panels, antimatter, waterforce, windforce, you name it, there are plenty things that already exist which gain energy other than energy only you put in. They just might not be the most efficient ways, and maybe there's a better one.

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Solar panels, water + windforce get there energy from, as you´ve said, nature forces. But where come these forces from? Not out of nothing.
The sun for example will be burnt out in a few million years. Then there won´t be any energy transformed (not generated, because the sun don´t generate energy!) by the sun.