I agree a lot of people have their heads in the sand. I recently read a book about Sarajevo- before the war it was a relatively middle class city, had hosted the winter Olympics and so on. People were very much of the opinion "it can't happen here“. See also Syria, Venuzuala and so on.
I'm not saying there will be a civil war or anything like that but my point is that there lots of countries where people were relatively well off and then one event plunges everything into chaos. For a less extreme example, you can look at Argentina.
The very rich will be insulated, and of course if the worst comes to, they will just leave the country. The poorest will, as always, suffer the most, but it's very likely the middle classes will be hit hard too.
And we are doing this to ourselves.