Canada

Can't say I agree with this at all. The thing about fission that people regularly mistaken about is how much actual waste there is, and how little of a deal it is. Not to mention that all the safety processes and security issues that you mentioned had been solved since the 70s or so. I mean, there's never been an incident in the entire world regarding nuclear fuel or waste being stolen. Only nations have ever produced a nuclear weapon, dirty or atomic.

And in regards to waste, the amount of high level nuclear waste that's been produced world wide is only a few dozen tons, all of which can be recycled and reused, cutting down the half-life from millions of years down to only a bit above 200 years, and reducing the total quantity of waste to only a fraction of the original amount. I mean, when people throw around all the nuclear waste numbers, they include low level waste as well, which include things like the radiation suits the workers wear while working near the reactor. Waste that become non-nuclear waste after a holding time of two months and are generally tossed with the trash like normal.

In addition, the worry about natural disasters is entirely a red herring for most nations that build nuclear reactors in the first place. The containment building of a nuclear reactor is designed to survive an actual missile strike. You could have a 747 dive bomb the nuclear plant, and it wont' crack the containment building. Nothing short of something on the level of a US bomber squadron dropping an entire flight of bombs, or a conventional nuclear weapon, directly on the plant will crack that thing. No natural disaster short of a magnitude 10.0 earthquake or a volcano sprouting underneath the plant will cause any decent nuclear plant to leak radiation.

And if you're going to mention Fukushima as a counter example, then let me remind you, that it took a direct hit from both an earthquake and a tsunami to disable the plant (the containment building didn't even crack from that), and the backup generator room drowning for a good 2 weeks without a single nuclear technician not being able to enter the entire city for that duration before the critical explosion happening. The damn reactor, a design that was considered flawed due to putting the generator room underneath the plant instead of above it like the original recommendations to lower the risk of terrorists that the US was worried about in the 70s in a nation without a history of terrorism before the 90s, managed to survive without power for its cooling systems nor any technicians to repair anything for 2 weeks. And to make matters worse, the Fukushima plant was actually slated to be retired a decade before it due to being too old, but was pushed to stay online until a newer plant could be built, so it was even way past its decommission date on top of every other factor going against it. And the worst that happened was a slight elevation of radiation for that one year, and the current discharge of tritium that is magnitudes lower than the amount that pretty much any nuclear plant discharges during normal operations. Far lower than the amount that anyone who sources water from Lake Ontario or the St Lawrence drinks on a regular basis, for example.