According to our local firearms expert posters, the AR-15 is the best choice for home defense.
The idea is not to completely eliminate shootings long term, as that isn’t possible.
The idea is to have the trend of shootings going down over the long term, or at least prevent it from going up.
If you will only take measures that you think are 100% effective all of the time, then you will never do anything.
If you said, “I am responsible, and I will take all reasonable precautions to prevent accidentally killing someone, or allowing my guns to fall into the wrong hands.” then I could get behind that.
As it is something that is possible, unless you think that you are taking a measure that is effective 100% of the time, it is something that you should have at least some level of concern about, lest you become complacent.