Rabbi -
To be honest, I'm not sure you are going to be able to understand this, but I'll do my best.
Because guns enable suicide, in countries where guns are often used to commit suicide, the ratio of successful suicides is higher.
This does NOT mean that the suicide rate is higher.
What it means is that a higher % of people who attempt suicide will actually die.
IOW there is no causal relationship between crime, suicide or anything else and gun ownership.
Of course not - but because of the above fact, the chances of death from suicide is higher in American households where a gun is owned. I'd be happy to post the research on this if you haven't already read it.