

I think the problem is just too many people. Social structures don’t scale very well because you lose the individual connections at some point and then you stop caring about how your behavior impacts others, and there isn’t direct accountability for your actions.
Depends on what you mean by devices.
My wife and I have two vehicles, this has been important when one failed for a bit.
Theres enough computers and cellphones in my home to restart civilization after a collapse.
I can’t think of any electronic device I couldn’t be without for at least a few days without serious issues.
The most critical thing that could go out is the power, and I have little control over that but at least my local power company is amazing at restoring service around here. We’ve never been out for more than 24 hours in the last decade.