It is true that I have trouble trying to concieve a way to use a machinegun in any way other than "fun shooting" - especially a crime
Still, we're quite a bit limited when it comes to firearms here, and I might be influenced by that general set of arms. That's probably one of the reasons I was in a bit of shock when I saw that M-60
By the way... the reason I own my gun is self-defense (fun shooting is a part of it, but for just that I could rent a gun).
I doubt I will ever have a need to defend myself against a platoon of motorised infantry (a MG would come handy then :-) Still, I didn't say that I would personally stop people from having them, just that it would make me a bit uneasy. One of the reasons being that AFAIK there is no non-military location here where you could shoot one safe - it's a small country.
The ammo expense on a full-auto must be horrific. I'm allready feeling uneasy sending bullets down the range with my CZ-75, it's too close to firing real coins

The Kadet kit is much of a solution there of course.