"... but I don't trust humans in general..."
See now, this is what is sad and this is why we lose our freedom. This is how laws are passed that assume that adult people are really children and need to be controlled.
The most salient fact of the existence of the 2nd Amendment is that it declares all citizens trustworthy adults who the government MAY NOT decide are too untrustworthy to be armed.
Throughout History, in every culture on every continent, those deemed trustworthy go armed and those deemed untrustworthy are disarmed. Full citizens in one culture after another signify their full citizenship with weapons. The very names of some cultures are those of the weapon that full citizens carried. (ie, Saxons). Subordinate people, serfs and slaves, were disarmed because (and for good reason) letting them have weapons was dangerous to the ruling class. A significant portion of Asian martial arts are directly derived from people learning to fight with things that were not weapons, but mere tools, because the common people were systematically disarmed. The rulers? The rulers always have weapons.
The primary "message" of the gun control in major US cities is... we do not trust law abiding black adults. This lack of trust is a direct statement that the people subjected are subjected and therefore a threat. Now maybe in other countries people are used to having rulers and a ruling class but we're not supposed to have rulers here, and our whole society and philosophy, the whole notion of democracy, is that citizens are trustworthy. When we treat the average law abiding guy as a threat... we've violated that idea of equality and self-rule in a fundamental and profoundly damaging way.