As others kinda said, it take isn't that much waste, especially compared to like coal ash. And it's actually much safer too in dry casks. There are also bigger problems with nuclear than the waste, but thats not your question. The way to solve waste is a combination of:

• big ol fuckin hole in the ground (e.g. salt mine or similar, where it will get sealed in)

• molten salt reactors and other modern designs, which more completely use up the fuel. Old rod designs are actually like kinda really inefficient.