Anybody telling you that “this is it, the crash is any day now” is hardly worth the time.
I am not against prepping, but for example there were voices in the wilderness for years saying “the stock market is overvalued, it is going to crash!” Eventually it did, in 1929, 1981, and 2000, and 2008, etc. Anybody who timed it is either lucky or an insiders insider.
For how many decades has the looming climate catastrophe not happened?
The world economy is a Ponzi scheme, but the cleanest dirty shirt is still the US dollar. I definitely advise prepping because if an outright destruction of the world's economy happens, gold won't be worth very much. I know I wouldn't give up my limited commodities for a rock. That is a very unlikely scenario, but one day it will happen. Recession or depression is a much more likely scenario, but most people find something to eat even then. The way technology is progressing, there won't be anywhere to hide in the near future.