>>112718 (OP)
>prepping for society to collapse
No but the infrastructure around this place has been slowly crumbling due to neglect so it only makes sense to invest and learn to self-sustain more.
>training to be a bandit and raid
How does one even go about that? Playing paintball? Practicing breaching? Grinding Tarkov?
Things like "tactical medicine" are all important skills that any prepper should be learning regardless of how much violence he'd be willing to engage in.
>>112735
To be fair, our population density has never been higher and an individual's dependency on the system has never been greater.
Every other "collapse" (most of them aptly mentioned itt already) was not sudden and each time humans did not have far to fall. Little would change for peasants (the majority of population). Decades or centuries later they would look at old ruins and refuse to believe that their ancestors built those, inventing cyclopi as explanation, but at the time this kind of masonry, plumbing etc were the apex of technological prowess and they did get temporarily lost.
These days however in a shtf scenario (e.g. Yugo war) an average Joe would find himself surrounded by too many other contenders for the suddenly scarce irreplaceable resources and also clueless about covering the necessities.
It doesn't take long to learn but in case of a sudden shtf most won't have the time or the mentors.
Thankfully, it's unlikely that a potential shtf would be sudden, a slow decline is more likely as chains of supply break down and resources dry out, so people will have ample time to adapt.
A more collapse is still possible though. E.g. a an all-out war breaking out (doesn't have to be global, take Yugos as an example again) or some kind of unexpected natural cataclysm like an unprecedented solar storm frying everything either connected to the grid or anywhere close to surface. Not the end of the world but it could take a few years to recover.
Also using this opportunity to plug webm related documentary again ("Connections"). Nearly half a century old but just as poignant (if not more). It mostly focuses on the chain of events that got us to where we are as a civilization, technology-wise, but also raises some philosophical questions and points out our lack of self-sufficiency in the globalized world where everything is mass-produced, and most workers specialize in a particular area of expertise because fields of study have expanded so much it is virtually impossible to be the jack of all trades anymore.