I'd rather see liquid flouride thorium reactors than fusion. They're much more viable (we've already got the tech - they had a working one back in the '60s), cheaper (we've got thousands of tons of thorium sitting buried in the desert ready to go), safer (meltdown-proof by design), don't contribute to proliferation (byproducts cannot be used to create nuclear weapons), and reduce waste (the waste is safe in tens of years instead of tens of thousands of years).<p>We still don't have a working man-made prototype for a fusion power reactor.