Different kinds of threats and threat levels require different responses. We all know what happened to Anne Frank.
GUNS and such have their role too.
Yes, and that's why crypto is, as far as export controls are concerned, classified as a munition.
Exercise your 2nd Amendment RKBA by owning and using both guns and Monero.
In the coming digital warfare, Monero is the equivalent of a Barrett rifle for purposes of reaching out and touching someone from a safe distance.
Well, yes, but, Survivalism 101 teaches us that you do not have to be able to outrun the bear in most situations. You only have to be able to outrun some of your fellows. So unless you are a Big Fish (lots of BTC) or leave your BTC easy to steal (or the info: who you buy from, BTC balance, etc.), mixing BTC is a "good enough solution", especially for the C-students among us (like me).
A .50? Yow, even a .338 Lapua with muzzle brake would probably tear my arm off at my scrawny shoulder:
http://onlylongrange.com/bad-news-338-lapua-magnum/
A .338 is what Chris Kyle wound up shooting near the end of his career. He liked the .338 because it shoots flatter. I believe the Brit who has the world record took out the Taliban from 8100' used a .338.