I mostly agree.  No one should accept domestic violence, they should leave.  But you are ignoring the case that JUST happened in our city, where a peaceful man had a gun in the house that enabled him to kill his wife in a moment of dementia.  The woman and neighbors apparently had no warning.  
I am appealing to gun owners who feel the onset of age or instability - be proactive and get rid of them before you do something you will regret forever.
If you need to shoot things for fun in the meantime, avail yourself of video games.
https://www.adn.com/alaska-news/crime-courts/2017/05/15/police-woman-found-dead-at-rogers-park-home-died-of-gunshot-wound/