The big problem is, guns are known to be an everyday household solution to an issue in the USA. Even for children.
In the UK for example, guns are not a solution so if you don't like someone you either have to plot an elaborate and more personal way of dealing with them, or as a kid you typically give them a dead arm and be done with it.
I know several adults with mental health issues that with guns available over the counter or in the home, would have either used them on themselves (most likely) or on a whole string of people that have in their words wronged them. As it happens they have had to simply live with it (life) rather disgruntled and attend CBT.
Where guns are culturally part of the solution, they are used as such; quite simply because it is a cultural and social norm. Even if that solution results in an unacceptable outcome.