This is so true, however, I believe the main religion may go on for ever, depending how long ever is, for with the current climate of one upmanship in many areas of the World being, West, East, Middle East, Far East and any others the future as we know it may not last as long as we hope for. In that the relentless quest for power by a good few of the World’s leaders and some aspiring leaders could well mean that the future could be short lived. Then what will their quest for power bring them and their communities, but do they really care as the driven quest for their own power extinguishes all others.
Unfortunately all you state has little chance of happening, now or the long-term future, unless the populace achieve what is currently seeming impossible.
The last point ‘To prevent future atrocities you have to treat the cause of the disease not merely the symptoms!’ is particularly relevant, but all are as well, but if you could achieve all these others, they will not be able to continue until you concentrate on the disease as well as the symptoms.
Take radicalisation, why are the people who are radicalised open to this action, unfortunately there will not be a common theme.
They could not have the will to resist.
They could have problems which are leaving down and open to be corrupted
There will be others, but all need to be identified and then appropriate action to minimise these areas and ideally create situations where they cannot manifest.
Take the UK, people are marginalised either into ethnic communities and do not forget that a white community is just as good or bad as any other community. Just because it may be the majority, in not a reason to discount it. We need to accept that in many ways we are all equal, however, some are more equal than others and there could be a root of the problem. Again the area of power is brought to the fore for power comes in many guises wealth is one, position is another, and in many respects the creation of some communities could be another, perhaps the list could be endless.
Religion and politics are two main causes, but they are not there alone, for if they were not there others would be created.
It could be within the makeup of the Human Race to which we all belong. If we were all created in Gods own image, then there is then no hope, so could the evolution theory have a better way forward, as this would mean that change will come, but not in our lifetime, that is if there is to be another lifetime.
So we have to ask is there really time for change to come forth.
A very complicated subject, but is certainly there for scrutiny and research. But then could the scrutiny and research be slanted with the human frailties.
This could go on and on and then come full circle, Oh, what a complicated Society or Societies we are in.