Why Prepare For The Collapse of Society?

Why prepare for a disaster? Why buy oil for the furnace? Why buy a weeks supply of groceries? If you would not even think of asking such questions why are you considering not being prepared for the end of the world as we know it?
If you are not prepared for a disaster, I forgive you for asking such a silly question even if you buy your heating fuel regularly. If you do not do the weekly shopping, it is forgivable for you not to think that far ahead as to be worried about what can happen in a very little time if we just have a solar flare that knocks out our electronic grid. Imagine hoards of hungry people piling up..., are you sure you want to put a stop to automatic weapon sales now?
We as a society are not the best of people even without pandemic levels of hunger as a result of food shortages caused by an unpreventable disaster. People kill each other for money, power and revenge let alone because they want what we have, whatever they imagine that is in a disaster, from food to cigarettes.
A man's (or woman's) home should be their castle. Not saying it needs to be built like a stone fortress with a moat, but it should be someplace where you can defend yourself from more than the weather and those you can easily lock out. You should have weapons that you know how to use and that will still work even if civilized supply lines are cut like swords, axes or spears and bows. Of course, an automatic weapon is great for the time ammunition supplies are available.
Sadly modern homes are built with too many glass entries, too thin the walls and are not even fireproof. Our ancestors were not thinkers, and it seems a lot of us still are not either. There was a time when school children went through bomb drills. Perhaps it is long overdue we all have community preparation drills for the end of the world that lurks around the bend waiting to sneak up on us like...