I use to be very pro nuclear. I'd write letters to papers and such explaining how the waste, which is the main concern most people have, is not as big of a problem as people think - and that certain manufacturing processes produce other waste products that are very bad and people just don't think about those...

Anyway, I changed my mind some time back. There are three main things that have turned me against nuclear.

• The first thing was that I read a detailed analysis of the 'payback time' of different forms of energy generation. i.e. the amount of time it takes for the machine to produce more energy (in dollar terms) than it cost to build and run it. Nuclear fairs very poorly. It takes a long time to pay itself back; but wind was outstandingly fast; and solar was surprisingly competitive too (this was back when solar technology wasn't so advanced. That's why it was surprising). So then, I got thinking that although nuclear's main advantage over coal is its cleanliness, wind is even cleaner, and easier to build, and safer, and pays itself off much much faster. And Australia has a lot of space suitable for wind power... so I became less excited by nuclear energy.
• The second thing is that as I grew older, I saw more and more examples of the corrupting influence of money. Safely running a nuclear power-plant and managing waste is not so hard that it cannot be done, but is a long-term commitment... and there are a lot of opportunities for unwise cost-cutting. My trust in government is not as high as it use to be; and so I no longer have complete faith that the government would stay committed to the technical requirements of long-term safe waste management. And a bad change of government could turn a good nuclear power project into a disaster. It's a risk that is far higher with nuclear than with any other kind of power.
• The third and most recent thing is that mining companies have started turning up the rhetoric in support of nuclear power. They were not in favour of it in the past, but they smell the winds of change, and they trying to manipulate the narrative and muddy the waters by putting nuclear into the mix. They say nuclear is a requirement for a clean future, and stuff like that. But that's not true. It's an option, but not a requirement. By framing it as a requirement, they trigger a fight between people for and against nuclear, and it's just a massive distraction form what we are actually trying to achieve. If the fight just stalls, the mining companies win with the status-quo. And if nuclear gets up, they win again with a new thing to mine... It's not nice

So yeah, I'm not so into nuclear now. It's not a bad technology, but the idea of it is a bit radioactive, just like the waste product.