Some responses of my own.
1) Of the "clean" energy production methods available, nuclear is the only currently feasible system. Solar and wind are making strides, but efficiency is still awful and they cannot meet our energy needs. Consequently if you want to produce anything more than a fraction of what humanity uses each year, you have exactly one choice - clean nuclear, or polluting fossil fuels.
2) You're clearly not familiar with the Thorium power movement, which doesn't produce waste. But even discounting that option, nuclear waste is already fact of life in a world where nuclear weapons are used as political clout. If you're really concerned about the handling of nuclear waste, you need to tackle the actual culprit of the vast majority of actual waste production - the military industrial complex and global socio-political and economic policy.
3) A lack of investors does not indicate a lack of safety and cost effectiveness.
Economics is not so simple. People do not always act rationally, especially as a collective, and the primary limiting factor of nuclear power is in fact the fear of the ignorant masses driving them to revile a complicated technology which they don't understand. People don't invest in nuclear because it's just too controversial to do so.
That'll happen when you undergo something like the Cold War - people have been quite reasonably scared senseless of nuclear weapons for roughly three quarters of a century, and therefor by extension they fear anything even associated with the word "nuclear". It's not rational, but it's how people at large think and behave. It's a fact of humanity.
That said, it's also a flaw a humanity - we allow our fears and biases to get in the way of fact, and time and again we prove that our own stubborn obstinacy can defeat the most sound and reasonable of propositions. Countless inventions have failed to find investors, only to be later proven brilliant.
Napoleon Bonaparte is quoted as having said...
"You would make a ship sail against the winds and currents by lighting a bonfire under her deck? Excuse me, I have no time to listen to such nonsense."
...this to Robert Fulton, inventor of the steamship which would come to revolutionize naval and maritime technology.
4) Nuclear power is "clean" because it doesn't pump out untold tons of pollution into the atmosphere. There's nothing disingenious about that.
You seem to be convinced that there is some inexplicable conspiracy in place, and that you are being purposefully lied to for some reason. You rail against the nuclear "industry" as if it was a cabal of evil geniuses trying to get rich selling poison to unwitting innocents. You seem to believe that the risks of nuclear energy are somehow uniquely different than the risks of other energy sources, or somehow uniquely more severe, or somehow uniquely less well advertised.
Energy production is not a simple endeavor. Until we have better technology, making renewable sources feasible on a large scale, we're stuck with a very few choices.
We can either use nuclear power, which has an amazingly accident free history except for a small handful of extreme outliers (like the Soviets using Chernobyl for unsafe testing and Fukushima falling prey to a natural disaster beyond anything every imagined prior), and which has had astoundingly virtually zero environmental impact to date outside of those few freak accidents...
Or we can use fossil fuels, which have a history rife with accidents, which every day pollute the air and the water alike as they pump out untold quantities of smoke and filth, and which we are rapidly running out of at an alarming rate, driving us to take more and more extreme, environmentally destructive actions (like fracking and oceanic drilling) to keep pace with our consumption in the face of inevitable unsustainability.