Religions made a lot of damage to human beings and our world in general. I'm not talking only about Islam, but every kind of religion, more or less, caused lots of problems.
I'm sure they will end. They won't last forever. But how will they end?
Which could the scenario that leads to their disappearance?
You should start to put less importance on your personal bias and more on people around you.
Faith is as important to personal well being as is mastery of trade of choice. Corporation is natural extension of ones bussiness and religion is natural extension of ones faith. Sign of intellect through which we learned to organize and act in unison.
It is also quite human, that some individuals in the past have failed and put their own personal agenda before well being of others.
So to answer you question. They will not end and you are wrong, since you fail to understand human nature.
Religion first and foremost is value system. If you destroy it, you can either degrade human beings to animals or worse, though socialistic approach, dehumanize them entirely, since all the moral battles they were supposed to face will be fought for them by totalitarian system.