It’s going away on the scale of billions of years. Personally, I think it’s much better to use it for space exploration than unusually expensive electrical power.
Now if was even vaguely cost competitive with battery backed up wind and solar then that’s a reasonable argument, but until then I just don’t see the point.
With seawater extraction and breeders there's enough uranium to power the entire world many times over for hundreds of millions of years. Thus, just like the fusion fuel in the sun, uranium fission fuel is effectively as renewable as it gets.
