Exactly. Out of three people in a relatively close sphere to me who have opted out of life, only one used a gun. One hung himself with a belt and one asphyxiated himself with helium. A friend’s coworker walked in front of a train. The man who sold the gun is no more guilty than the train engineer of the guy who jumped in front of it. A parent may not be directly to blame for a suicide, but in my experience, there is often a complex background (including their own mental issues). Every one of the three I knew had parental problems- either abuse, abandonment, or neglect.
Rule #1 - As long as Gravity exists, so will Suicide.