That is the attitude so that honestly is the problem with the world.
The attitude that says we can bring down governments, arm rebels , support despots, bomb infrastructures , move millions from their homes , write countries constitutions, put minority religions governing , benefit from the oil, create artificial countries , when we fuck things up completely we just walk away and leave it to them.
It is utterly contemptible when either individuals or nations behave like this.
I firmly believe you reap what you sew and if you make decisions in life as either a nation or an individual you hold responsibility for dealing with the consequences.
To fuck things up like we have and then to walk away as civilians are massacred would be beyond words ....
If the world ends up a mess because it ends up the same it will be because of the pursuit of wealth, the pursuit of colonisation etc not because of refugees.
Why is there so much extremism in Sunni Islam ? In the main because a Saudi government we propped up kept its population quiet and kept Revolution agains obscene wealth in check by using heavy investment in religion as a tool. Why did we prop them up, because it protected our industry and oil supply, we were happy to support millitant Islam if it made us rich. We made that call now we have to live with it.
If we are prepared to do things properly and spend the money and take responsibility we may avoid what you ton about, if we want to continue to do things cheaply and to take easy decisions then things will get worse.