I wasn't aware it was a requirement to be sick to consume medication.
yes it is.
The fact is the USA is the most medicated nation on Earth. Everyone wants to pretend this is not a factor, instead opting for the personification of inanimate objects, blaming them for the acts of mass shooters, the majority of which are on some kind of psychotropic drug with the known side effects of suicidal and homicidal ideation.
well, mass stabbing is a little harder to perform, but you're partially right, it's not only the guns, it's also the violent, racist culture.