Reducing the number of guns doesn't solve the root issue (which I think we'd also agree on), but it should minimize the harms while being dramatically easier than changing the American ethos. Hell, America could likely get 80% of the results (no school shootings) with 20% of the effort (additional restrictions on firearms, more akin to Canada)
I further think the second amendment is causing Americans more harm than it's worth, though that's a seperate discussion; some examples include suicide statistics, accidental discharge, a lack of protection even when carried legally (such as in Alex Pretti's murder) and the fact that, when firearms could be anywhere, police must treat every interaction as potentially fatal - with all the force that requires