Just chiming in on the whole long term reality thing. Unless you live out in the sticks (and no one knows about your stockpile), any major prepping is just hording shit for other people to come take from you. Being prepared for a 1-2 month societal disruption is a good idea. You can ride that sort of period out with some dry goods, water, bullets, and common sense preparations. Anything lasting longer than that (or even a week or two in some areas) and people will get to you and take what you have. A locked vault in your basement (assuming no one plugs the air holes) is so over the top and ridiculous its more economical (and safer) to have a shit shack somewhere in the woods and a bugout bag to get to it.
I mean look at what people did during Catrina in even the burbs around New Orleans. People turn into savages the moment food and water starts being scarce, particularly the kind of people who are too short sighted to have a bug out plan. Plus thanks to the color war being pimped, you can bet the murdering will fall along racial lines and packs of wild wakandans will be at the forefront of the pillaging. That Catrina shit happened in under a week. Imagine a month with no clear end in sight or promise of federal aid.
Having said all that, I do practice what I preach on this front. I have enough dry goods and water to hold out about six weeks, with the idea we cook up the perishables on the grill day one if shit goes bad. I have several firearms and a decent supply of ammo to at least make the rape gangs work for it. Our neighbors and us have a plan in place for covering each other and when its time to bug out. We have bug out bags (loaded cases really) ready to toss in our truck if we have to make a run for it. We live on the outskirts of a Texas city, so plenty of ways out (and a preplanned place to go) if it comes to it. But I also have to be realistic in that we are old fat fucks and not long for this world in societal collapse, so the two bullet plan (one for her one for me) is always on the table if things get that bad. I figure if its not a get out immediately situation, I am probably just going to make an effort for the first pack of savages work for what I have. But make no mistake a pack of feral assholes, especially if they nabbed some guns, is not something you can defend your home from realistically.
The riots have taught us all that we are already on our own and cannot count on proper authorities to defend ourselves. Anyone taking serious steps to be ready for a partial or full collapse of society needs to keep in mind we are already working without a net. So, bare minimum, learn how to hunt and have a bugout bag. And trust no one.