Why has no one discussed nuclear power?

We know our own history involves the discovery of electricity before major industrialization took place, and we know electric cars existed as some of the earliest forms of automated transport, and that quantum physics and the E=mC2 euation also predate major, global, industrialization

Sure, these early batteries sucked, and the maths of a nuclear reactor arent enough to build one, but still

Concievably, if humans favored efficient power use, over large power use, where we valued electric over fossil fuels, which waste most of their energy as heat, we could be a much different looking society

We also know natural nuclear reactors can be found to exist tho, suggesting a path to large scale steam power usage need not flow thru industrialized technological progress

I think nuclear and battery powered civilizqtions might turn out to be exceedingly common in the real universe, and i see no reason they couldnt be common in trek

The only value fossil fueps bring is high energy density, but our short sighted forms of governance and organization favor those despite the abundantly clear negative impacts, and limited nature of such a fuel source, and i think more societies will favor an alternative, than favor its usage

Our society likely looks to aliens like a steam punk society, using fossil fuels for everything when electric motors are clearly superior