Just a few things to think about, as far as the discussion about where the line should be drawn as to what is legal and what is not. They had to draw a line somewhere, and as a general rule, once you draw a line, if you start making exceptions right and left, the line means nothing. Which is why everything on that side of the line is fine, but once you go an inch under it, it's illegal. As far as why the line was drawn there...well, I don't pretend to know what goes through the government's mind.
Generally laws are made with the idea to protect the general public. Yes, laws do restrict freedoms, but
ideally those freedoms restricted are only to protect the greater populace. We all know we don't live in an ideal world. Still, I don't think most people are capable of safely using a nuke, just like I don't think most people are capable of safely driving 130 mph. (Have you SEEN how badly people drive? lol) It's a balance between the rights of the individual to have/do things that can potentially be harmful and the rights of the populace to be protected from harm, accidental or otherwise. I know many, many responsible gun owners who could safely be trusted with everything from pistols to grenades to claymore mines. However, I also know a ton of people who shouldn't even be trusted with board with a nail in it.
Laws will always restrict freedoms, but I think we're better off having some. I don't really agree with the general idea of 'slippery slope' because the general idea of that argument is that once you restrict something a bit, it's only a matter of time until it's completely restricted or even eliminated. The problem is, if you boil that down you're left with not restricting anything, which leads to no laws. We do need laws. The question is, do we have too many of them on the books? Are some of the laws on the books bad, and if so, what do we do about it? Just some food for thought.