What you should worry about is half-lives of under a few years.
> the risk that something gets out of control are extemly high
Except this is false, you are just spreading misinformation. I suggest you confront your current knowledge to different sources and listen to the arguments of the proponents of nuclear energy before you make up your mind. Don't just repeat what you have heard.
https://en.wikipedia.org/wiki/Windscale_fire
https://en.wikipedia.org/wiki/Three_Mile_Island_accident
https://en.wikipedia.org/wiki/Chernobyl_disaster
https://en.wikipedia.org/wiki/Fukushima_nuclear_accident
With regard to nuclear waste. Here is an example, how it can went quickly out of control:
Safe, clean, too cheap to meter?
Some things never change.
The C.G suits were right as long as the digging operation is not too costly (the more shallow and concentrated the better)
Fossil fuels are nothing short of a miracle because they are so energy dense, but it's a slow poison and has high addictive power.
As long as we didn't (want to) know about negative externalities (chief among them CO2 and CH4) whose cost was borne by humanity, it was ok. Dirty but everyone seemed to think it was worth it.
The advantages of nuclear is not that it would be too cheap to meter (even though that becomes true with time because most of the price is upfront investment).
- It is that you can get energy independence even if you don't have uranium because it is so energy dense that you can just stockpile it. For example France could run its plants for 2 years with its current stockpile of uranium, and it only recycles around 10% of its fuel. Compare that with its oil needs, the oil stockpile would only last 3 months, probably less.
- It is CO2 free
Bonus: Nuclear industry is required to take of its waste products (which are only waste products insofar are we are too lazy/cheap to recycle them, else they are just more fuel)