I don't see how the inclusion of that little tid-bit of info was helpful at all to the conversation, but rather seemed like a cry for legitamacy or authority as "someone who cares". But that's my personal opinion and I could be totaly off track with that line of thinking. It was a bit more sarcastic/funny in my head than it reads on the screen.

There's also the comment about when they become inexpensive enought that every idiot with own one, which implies that only responsible people have money and that poor people are largely irresponsible. But that's another debate.
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Cars do not have to be registered and a person does not need a licence to drive on their own private property. Registration and licencing comes when you want to drive on public streets.

I don't agree with the registration of guns either. There are records of serial numbers, but only if the authorities have the gun in their hands are they able to trace it to the owner. That is not registration.

If I had the cash I'd buy one of those lazers...just because I could. And I'd use it for personal amusement, just like I do with the guns that I own. I do treat them as toys in that reguard, but I also know their capabilities and treat them with all due diligence.