for sure the military can use the depleted uranium. The M1 Abrams tank from the US using it for its tank plating. It incredibly strong. The bullets that use depleted uranium tips are very good at penetrating tough materials.
So, within a context of what's best for all, obviously using nuclear energy doesn't mean we have to use the depleted uranium for the military.
Actually, the video that I originally posted and was deleted from youtube, which I can't find, had said that the government purposefully made a campaign to create fear behind nuclear energy waste, so that they can receive the depleted uranium from other countries around the world for a fee! And then use it for their military purposes. Basically the depleted uranium is super valuable.
In this removed video the guy claimed to have built and oversaw the building of nuclear power plants across the US and other countries. One thing he said was that he could drink the water used for cooling the rods. And that it was safe. In this video I just posted above this week, it seems to confirm that indeed the water that cools the spent rods are safe. It seems that water naturally prevents radiation from moving.
Given this above information, it makes sense if Fukushima then never had an issue with nuclear waste entering the oceans. Meaning the water was never contaminated. As far as I understand the spent rods do have radiation, but as long as they are submerged in water than it doesn't or can't affect anything nearby.
I do find your idea of the solar power plants that are in orbit of earth. I also have considered similar ideas, and using lasers to beam it down. This obviously would involve the cooperation among space agencies and scientists and governments.
I'm overall fascinated/interested in all things science. I consider uranium as just another material of the earth found naturally in the crust and holds tremendous Heat, as kinetic energy once you activate split the atoms. It all depends on how you use it and how you make it best for all. I read recently that South Korea has very efficient and effective designs for nuclear power plants, that they have proven.
I wouldn't be surprised if oil and gas companies are pushing the fear behind nuclear power plants too. Basically in this day of today, someone who makes money always has an interest somewhere to spread some ideas/misinformation. The best is to always question it and find ways that you can either test for yourself, or see directly with commonsense. I trust in science in that people are honest and have good-will. Obviously people are limited, but scientists typically aren't in it for the money.