Off topic, but important in the larger picture ...
"The world will be changed and overhauled many many times over and over again." ... of course, it matters who's baklava is being stomped on ;-)
There is a wide spread theory that one of the reason why the Roman Empire failed in the West, was thru corruption and mismanagement. The East was much better managed, less corrupt and had the advantage of the Egyptian grain supply (which ended with Islam, and pretty much doomed the Byzantines, though they could partly compensate by ramping up grain imports from the Ukraine, though that was eventually disrupted too). It took awhile for W Roman Empire to fail, about 250 years .. things changed more slowly back then). The barbarians were merely taking advantage of a regional systemic collapse, something they couldn't do until after 391 CE.
So the West must fail, because reality will spank people who are delusional, who are not fact based, not reality based. This can be kept at bay, for awhile, thanks to injections of fake liquidity (as happened in Rome from 200 CE onward). Eventually people are forced back to barter, like what is happening in Greece and India right now. But that liquidity is necessary for civilization higher than agricultural subsistence. Thus the Roman cities of the West were gradually abandoned, even Rome itself. Right now in the US, about 90% of us are urban ... when we have to cycle back to Dark Ages subsistence, we will have to lose about 90% of our population, since they will be useless mouths to feed. This of course works in Turkey too, and has happened many times before (Ephesus, Smyrna etc). Are you "close" to subsistence fishing or farming? If not, your future is bleak, as the inevitable cycle of history repeats.
It wasn't until 19th century London, that any city in the West became what Rome was at its peak in the 2nd century CE. ... that is how long the "depression" lasted ... 1700 years.
Yes, this is true. (By the way, I live in Smyrna. Literally, in the ancient city called Smyrna,lol ) I am somewhat close to subsistance fishing and farming.
However, the change you are describing is already happenening right now. And while it is happening, it is forcing a change and that change is painted as 'war of religions' or 'war of cultures'.
The so called Syria conflict is on based on water crisis, Baruch. But it is as served the bullshit of 'Islamic war on the West.'
What you are wrong about in my opinion is defining that change which has been constant the entire time as something determinate with certain conclusions; you are comparing -again- ancient civilisations and their relationships to present day ones and expressing that change today as 'failure or collapse' as opposed to 'rise'. Roman Empire -as you know perfectly- was just a central power zone. It's just an Empire. Like many others. Aztec, Chinese, Egyptian, Ottoman, British, European, American, ...etc. And in that period the entire 'global economy' was limited to an Empire's power of conquering one place and using it as resource deposit, today while this goes on exactly the same, it is only limited to certain resources, and the rest is on trade - int. politics, because our power and variety of production have changed dramatically since then. If American economy fails so does ours. (I understand why you often compare these two worlds -ancient and modern- but I think besides the certain basics, it is incorrect and I never put modern world in a special place saying that.) Now when the latter; modern global economy is in danger other factors comes into play. Agreements, politics, new alliances and blocs. We depend on each other today in an incomparable way.
So what you express as 'failure' of one civilisations it is just redefining the same civilisation with different traits. When Church lost power, the Age of Empires started. When they lost power, the modern state and new central power zones and blocs occured. During this process the West, East, South and North have constantly been redefined. And after that many times over. New generations get born into new versions of these power zones and it will be the Western culture then. Same goes with others. And they will all complain about the 'failure' of their civilisation and how 'the end is nigh' in their own time. Humans are doing this since they invented the concept of 'the end is nigh' themselves in every period of history.
To see all this process; development of humanity as 'collapse' of a certain culture actually tells what was wrong to begin with and it is a form of 'religious' thinking. When I say the world is going to get hauled over, I mean it literally. The demography, migration, lack of basic resources will haul the world over. Just 200 years ago world population was less than 1 billion. Less than 1 billion. For thousands of years population grew slowly and then it dramatically jumped for many reasons we all know. 200 years is a very miniscule, tiny fraction of 'time', hell 10 000 years is a tiny fraction of time and sometimes I think people forget that even if they are aware of the historical concept of time in earth scale. (I am not saying universe, I am saying earth.)
In short, the idea that a certain civilisation or culture will collapse and stop being what it is supposed to be
in course of humanity resulting an active role to change it fundamentally is a perception of one individual's idea of civilisation as he knows-see of his own. A perception that can very easily shaped and manipulated completely outside of reality for every mass of people in every culture. Besides being the greatest bullshit, it's very arrogant, Baruch. Not to mention ignorant. Western civilisation, Mestern civilisation. What do you really think is going to happen to the world when Western civilisation changes or in your words 'collapses'?
On 17 of August 1999 at 03:02 am, I was awake and roughly 100km away from the center when the Northern Anatolian Fault Zone produced an earthquake at the magnitude of 7.6. Nothing happened to me or to my family. I was just scared as hell. I will never ever forget that. Not because of the loss of life, because that 45 seconds is a very tiny scale reminder of how small we really are, how fragile, how NEW and clueless. How incredibly insignificant in nature, just in this tiny planet's scale. The ultimate truth. There is nothing to beat that. Nothing.
Please take a step back and appreciate the ridiculousness of evaluating one civilisation's 'rise' or 'collapse' on earth as the key influence on humanity's 'fate' and also then compare that with people who are preaching that SJW movement is result of Cultural Marxism and the slow 'end' of their civilisation. (Is there a word in English that combines severe stupidity, narcissism and arrogance at the same time?) I am putting the Earth Clock here for inspiration.