The future needs to first invent cheaper, more available, and more efficient energy storage before we can replace the old power plants.

That fusion is the technology of the future does not mean we should dismantle what functions today.

Would you be able to store a few kg (after decades) somewhere in your flat/house?

I would say yes easily.

"Hey we're is your nuclear waste?" "It's under my bed"

> Is that a lot or very little?

Read on my link. It's very little.

How so? As far as I can see, wind and solar are both inefficient, requiring fossil fuels to set up, and particularly with solar panels have long term environmental impacts that we have yet to solve. The panels are difficult to recycle and are not being recycled, and the method to create them leaves incredibly toxic compounds that are difficult to dispose of. While nuclear is incredibly energy dense, far safer than the many coal plant we need to supplement poor “green” energy production, and is comparatively easy to deal with the waste of.