Maybe Somalian pirates are relatively chill on the non nation state armed groups out there crazy scale but ISIS and many other terror groups most definitely are not chill. When someone even figures out how to build a powerful conventional explosive you get things the Oklahoma City bombing.
So yeah that's kind of a big deal. The US did essentially invent the weapons and only one to use them in warfare. I think it's also the responsibility of the US make sure it doesn't happen again where they are used against humanity.
Interesting. How would you suggest the United States goes about ensuring nuclear technology is never used against humanity again?
They absolutely could be used to produce material for dirty bombs, but that's not a factor with North Korea, which has plenty of material to do that anyway.
There simply are no effective mechanisms to prevent this, we're just lucky that domestic terrorism isn't very profitable.