OK. So somethng has caused it.
Now, do we continue to yell at each other and blame each other, and basically do more of the same while things get worse?
In the 80's and 90's we can be forgiven, to some extent anyway, IMO, for thinking the 70's were an anomoly, and that better times could be had in the first world - with things like PC tech. leading the way to prosperity.
To anyone with a functioning brain, the past decade should have pretty clearly demonstrated that -- oops -- this doesn't seem to be working.
Technology (automation) crushing jobs, and the fact that the first world is at a HUGE disadvantage in the labor arbitrage game -- is at the crux of much of the problem.
NO one - not the voting public, certainly not the politicians who want to be re-elected -- wants to endure the painful reality that retrenching, that massive investment in things like education and infrastructure, that facing the reality that on average, the first world must accept a MUCH lower standard of living.
Until that happens, which party you elect (and their empty promises) just decorates the path to hell with different colored signs claiming all is well.
What might work? I suggest things like:
1). A tax system based FAR more on consumption than income. Use credits for the poor to keep this from being too regressive, at least to a point. This addresses resource constraints. It can address energy if done properly. It also stops directly punishing people for being productive, and rewarding them for not.
2). Invest in education and infrastructure. Also, realize that just throwing more money at education isn't working in K-12. Maybe trying things like charter schools is a worthy experiment -- we sure as hell need to do SOMETHING or we just become less able to compete as a society.
3). On balance, significantly raise overall taxation and reduce government consumption until we eliminate, say 90% of the government debt. Will this be painful -- yes. We will have to either act like adults and priortize what we spend, or cut EVERYTHING (which I think politically is the only way we'll do it).
(Once the debt mess is cleaned up, I like low taxes as much as anyone -- as long as we don't run deficits and society can live with the programs we have -- cut taxes all you want. Guess what -- we'll probably have to COMPROMISE on this.)
Do I think this will happen? Hell no -- there are FAR too few adults in the room.
We now return you to our regularly scheduled program of yelling and blaming...

Given the track record of the perma-doomer blogs, I wouldn't bet a fast crash doomer's money on their predictions.