Doc Demian,
You're right, psychos and homicidal loonies probably didn't go and hand in their weapons.
But how many gun accidents are caused by weapons owned by the crazy folk? Some, yes, of course. Perhaps even several, or many.
But how many are caused by people who bought their gun legally, but just fucked up in the storage and use of it? Enough to warrant tougher gun restrictions.
By the way, anyone who uses the argument of hunting for sport to justify owning guns is a tool.