What greater freedom is there than the ability to buy a small army's worth of guns and ammo, to use as a backdrop to explain how you need to defend your rights from a imaginary monster, while actual monsters use those guns to kill children... nearly every single day, with school shootings nearing every other week. (About 30 of them this year!
Have you considered stopping the monsters before they're monsters by fixing poverty and jingoism, instead of just deciding you're going to babble mindlessly about taking away the human right to self defense?
Like that would even be possible in a nation with more guns than people?
That being said, you're right that a lot of the problem with gun violence has to do with external factors such as poverty and extreme nationalism. An overwhelming majority of mass shooters are male and less overwhelmingly white which hints at a problem more to do with the environments they are raised or live in. If the problem was stricly gun access, we should expect more mass shootings to have been committed by women. In addition, half of all mass shootings in the US have occured since 2000, a third of which since 2010.
A lot of gun regulation tends to target poor people too, intentionally or not. Tax stamps, fees and mandatory wait times assume someone has the money and ability to take time off to acquire a gun, and wealthy people (the ones who already own most guns) have both. Making it harder for poor people, who are disproportionately black, to arm themselves in a time where racist violence is hitting record highs and stories about police brutality hit front pages every week at least, is unfair.
I wonder what gun ownership would look like in 20 or 30 years if right now were enacted (and not thereafter repealed) a countrywide prohibition on advertising of guns & ammo, and on showing any firearms before the watershed and at any time in G- and PG-rated media.
Putting aside the reality that this could never happen because of frozen peaches and strawmen on slippery slopes, I strongly suspect it would do a lot to curb the fetishisation of firearms.