My position is mainly that gun ownership should not be treated as a constitutional right. Guns are dangerous instruments that have a legitimate use when owned by responsible individuals, but they are not something everyone should be entitled just because. In consequence, possession should only be allowed to people with legitimate reasons to own a firearm (say self-defence or hunting*), who have proven to be responsible (mentally and physically, through a background check and training, and acknowledgement that they'll keep their guns safe) and only with firearms proportional to their intended use (no need for assault weaponry or dispproportionate amounts of weapons).

Or course, Wolf makes a very good point that a huge part of the problem is mental health. Most people are legitimate owners, regardless of their Second Amendment views, and they just want to keep themselves or their families safe. The issue is what to do whem someone mentally unstable gets access to a gun. While complete safety is impossible, it should definitely be a priority to reduce the likelihood that (a) mentally unstable people will get access to guns, through background checks and real owners keeping their guns safe and locked, and (b) they will get appropriate and timely help, so they won't end up seeing a mass killing/suicide as their end game.

And, well, this isn't 100% related to the actual issue, but what's the deal with so many Americans and their gun culture? I've never really understood it. Over here it's really uncommon to see someone own a gun. Sure, criminals have them, but even then it's just not something you'd normally do, buying a gun. It'd actually be very unnerving if someone I knew did it, and I think it's similar in other countries, how guns aren't a "constitutional right" or anything like that.

* Even though I personally don't agree with recreational hunting.