Toronto Sun on gun registry

"This was nonsense. Gun registries don’t deter such crimes. The main purpose of a gun registry is to warn police if they are entering a house that has registered weapons, primarily in domestic dispute cases. It’s also — combined with requiring gun owners to obtain permits and properly store and transport their weapons — aimed at reducing the spontaneous use of guns in moments of anger, despair or recklessness, that lead to domestic murders, suicides and accidental shootings."

Now there's an interesting piece of rationality with a huge blind spot! Would it not be cheaper and equally effective for police to always assume guns are a possibility in domestic dispute cases? (I'll bet they do anyway.) And what regulations have ever reduced the spontaneous use of weapons (guns, knives, brickbats or pitch forks) "in moments of anger, despair or recklessness"?