i wish i had a clear answer to your cogent questions, Cyrille. the best i can come up with is negawatts, i.e. the screaming on the pronuke side that we'll never be able to generate a tenth of the energy we use now, as if it were axiomatic we must, i believe to be delusional.
first of all they don't know that for sure, as we have barely begun to try supplanting it, and secondly so what?

i think we use and waste criminal amounts of energy, and i don't think that we will all be huddling in caves without nukes, but i can't prove it, or do more than cite kunstler or some other semi-authority as agreeing with me. no-one is an authority on the future though, too many variables. i do see many advantages to living using way less energy though, and i feel it to be 99% inevitable, unless some unforeseen breakthrough occurs.

i guess we can wait and see, while remaining in polite disagreement, but thanks for your reply, you frame your opinions well, and i know the vast majority of people agree with you, still, notwithstanding fukushima.

'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty