Religion has existed since the most primitive of days in human existence. No amount of effort to change or eliminate it will ever remove the spiritual question of mankind. It is naive to believe it will disappear; it will continue to change and adapt as it has, just not too radically as other questions of existence like the functions of the universe.

As it was said before, it is not the duty of science to disprove faith or the purpose of faith to ignore science. They are unrelated spheres that people have crossed. You can use one in the other and vice versa, but you dilute them both to varying extents.

The subject of faith, I might add, is as much a source of conflict as anything else - again going back to early humans. Even the relative in Neanderthal apparently had basic religion or spiritual practice. No less, it seems many of these early religions had violence in them as a recurring theme, but their entire life was violent be it escaping predators or going on the hunt; religion is not special in this regard and it is not some great Boogeyman in the dark of humanity's. People will kill one another in the name of anything or anyone as an attempt for justification. The difference with any faith based question, spirituality or not, is that it relies upon a mechanic that more or less cannot readily be beaten. That question is belief, or in essence the subject that deals whether one thinks it to be true or not. Their perceptions and convictions in that are everything.

Organized religion is just as much a tool of that predisposition to leverage belief as anything else, just as much as the rallying cry of some political doctrines or "scientific" efforts to exterminate people's or "purify" bloodlines.