It can, but it's uneconomical except for some niche applications, and breeders also come with their own proliferation concerns. Most nuclear waste is being ware

It can, but it's uneconomical except for some niche applications, and breeders also come with their own proliferation concerns. Most nuclear waste is being warehoused. So, a reason to do it is because it would be cheap and safe if done correctly. If you look at e.g. [1] you'll see that we generate around 100k TBq/y of waste. Just the radiation from natural potassium 40 in the ocean is 14,000,000x10^15 Bq. So if we dumped all the nuclear waste the world produces in a year into the ocean it would be just 0.0007% of the radioactivity we're already getting from only that natural potassium 40. We could keep it up for 1400 years before it would be a 1% addition. We're killing around 5 million a year from fossil fuel use. Anything that makes nuclear cheaper is a good thing in that scenario, and storing waste costs a lot of money. 1. https://www-pub.iaea.org/MTCD/Publications/PDF/te_1591_web.pdf https://www-pub.iaea.org/MTCD/Publications/PDF/te_1591_web.p... 2. https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_waste https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_...