In the long run as per my view Islam will fail.
The main reason for this is
Islamic extremism. No one likes to follow a religion by force or no one likes to kill people in the name of God. (well, here I'm talking about a typical ordinary person)
Well if you argue if they do, that's purely becuase lack of knowledge. If you look at closely all these extremist do live in Afganistan, Pakistan and in African countries. All these countries have one thing in common. Very less literacy rate. And poor standard of living conditions.
People are becoming more and more aware of the latest developments in the world. They have access to internet, they go to school and learn to read and write, they come to know about the freedom that the other religons offer and have. Muslims will be
atheists or they might end up following other religions.
The above I have mentioned one way of Islam's faliure. (and you can avoid this by offring various economic benefits to poor people and forcing them to follow Islam. But this is a short term strategy and will not be the most sustainable and prudent option)
This is the other way brother,
I hope you very well know about the long term conflicts between Palastine and Isreal. Israle is a proxy of USA. Your greatest enemy is not us, but USA and western countries. Iran is trying to show its colurs by expermenting short range missiles and trying to provoke Western countries. The fate of Iran will be the same as Iraq, Libiya, Tunisia, Egypt, Syria (soon to be), Baharain, (soon to be). There's no point of talking about Quwait, Qutar and UAE. You know these coutries more than me.
So this is the other way how Islam could be vanished from the world as per my analysis.
P.S I have nothing against you.