And demonstrated maturity by burning coal that as part of normal predictable operations kills thousands a year? Humans' continous insistence on burning coal instead of thorium may well be our Fermi filter.

Of course not. Demonstrated even MORE immaturity by burning coal. Aliens discussing us: "are the earthlings burning coal for fuel? I thought you said they couldn't even handle nuclear fission?"

"Yes dear Sklaar, it's even worse than we thought. Can you believe where they put the exhaust? Straight into the atmosphere!"

And so it happened that Earth was put into another 1000 years of no-contact-policy at the latest board of review, kids...

A lack of maturity by what standard? When we say such things of an individual, we do so by comparison with other individuals. With whom do you compare our entire species?

I can at best give you a circular (or spiral, given that generations pass) argument: nuclear has not demonstrated that it has a great appeal to current stock of humans.

It didn't because humans are not rational and bad press is highly overblown. Mostly because of link to weapons of mass destruction I suppose.

Nobody says anything about the health and ecological disaster that is coal and oil. People do not attribute mining deaths to it and are bad at linking long term chronic health effects to them.

A red herring of solar and wind is proposed that people haven't rejected due to outages thanks to the other technologies covering its major drawbacks.

Likewise hydro disasters are not covered as much as they should.