I think you missed the main one:

People with guns do not want to be in a position where they could not help themselves or someone else because they didn’t have one.

You can go on you tube or twitter to find an infinite number of examples where having a gun prevented a crime, or a death.

These stats rarely make it into public discussion although it happens way more often than harm to innocents.

I used to think guns were scary. Taking some lessons, understanding how they work. Talking to gun owners about safety, social interaction and so forth help to understand their position rather than just continuing a virtue signaling diatribe about “good” and “bad”

Learning that it is irrelevant to ban them and that poverty and control are the problems and not hammers, knives, cars or guns.

Banning things to make bad things not happen is the slow-brain band aid method. But for some, its too hard to work on the things that would instigate change.