They’re not better in every way. Uranium-fueled reactors are better at generating weapons-grade nuclear material, like Plutonium-239. Because of this one advantage, superpowers like the US government have sunk many billions of dollars into R&D for uranium-fueled reactors over many decades, meaning uranium reactor technology is now far more mature than thorium reactor technology, making it relatively inexpensive and efficient because so many of its issues are already known and solved.
They’re not better in every way. Uranium-fueled reactors are better at generating weapons-grade nuclear material, like Plutonium-239. Because of this one advantage, superpowers like the US government have sunk many billions of dollars into R&D for uranium-fueled reactors over many decades, meaning uranium reactor technology is now far more mature than thorium reactor technology, making it relatively inexpensive and efficient because so many of its issues are already known and solved.
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