Well, that’s your opinion, but it’s not the widely accepted opinion of the medical community. Here’s more information, if you’re actually interested:
Better Mental Health Services Won’t Stop America’s Mass Shootings
If our goal is reducing gun violence and preventing mass murder, talking about mental health is not enough.
Banning guns won’t prevent gun violence. Fixing the mental healthcare system will also not prevent gun violence. Gun owners need to be willing to talk about both, and stop being so reactionary about someone “trying to take law-abiding citizens guns away.”