The primary purpose of an AR-15 in the US, comparing the number of guns in circulation and the number of crimes/suicides/self-defenses, is sitting idly forever

The primary purpose of an AR-15 in the US, comparing the number of guns in circulation and the number of crimes/suicides/self-defenses, is sitting idly forever in someone's gun safe, or being used on a shooting range. I happen to be on-board with gun possession by law-abiding citizens, with minimal licensing requirements (no more obtrusive than for driving for handguns, or driving a semi for a rifle). However that's not the point. " I don't disagree that it should be banned or heavily regulated even if in some specific setting it could possibly be used for other purposes." - but wouldn't that apply to everything? It is obvious that a typical govt would try to clamp down on things that are a threat to itself, be it guns on anonymous defi. The question is (1) how much do you trust the current government / an average government on Earth / support whatever the current laws / average laws are in the first place, (2) how much do you trust the government / laws to not deteriorate in future (e.g. abortion ban with financial punishment for violators, Canadian trucker style, how about that?), (3) is the government less or more likely to deteriorate when checks on it are removed?