I noticed on "Social Media" a LOT of comments about what "should happen". We should this, we should that. OK, fine, whatever, it's facile thinking to me. There are reasons things aren't done, usually, like say thorium reactors. I could list all the potential benefits while ignoring any downsides or reasons why we don't have them all day. The same is true for "high speed rail" in the US and better food options and a better energy policy and better health insurance, or higher taxes on billionaires, or better quality candidates for public office, or "greener energy", you name it.
But there are reasons, sometimes not appealing ones, why we don't have X or Y. Nobody seems to want to deal with those reasons.