I don't know whether it's the truth, but in my country it's universally accepted opinion among many people that most middle-east terrorists are created and financed by the US. Given the fact that western forces utterly failed to fight ISIS until Russia was involved and then tried to oppose Russia as much as possible (yet Russia still crushed ISIS), it doesn't look very unlikely for me. So one possible way for the world is to have reduced terrorism which might help even the ordinary americans.