A weird fetish for guns and a completely unregulated gun lobby.
In Switzerland every male between 18 and 40 that hasn’t actively decided against it, has an assault riffle under their bed (for some that’s meant literally…). Althoughwe don’t let them have ammunition as well.
Anyway, you can buy guns here and people do. It’s just not that we think we need them to defend ourselves against the government (which judging by the power of the us military is totally ridiculous anyway). We also don’t allow you to carry it around, let alone loaded ones.
America is a ridiculous cesspool of stupidity, missed educational opportunities and weird, culty patriotism that guns are somehow a part of. The internet made it easier tk spread this and so conservatives have been more successful in spreading their crap around.