Well, to start with - Islam had a beginning, like so many other religions, so never 'always stood'. Many religions are older than Islam, and it has diverged perhaps as much as so many other religions - Sunni and Shia being notable splits (and still causing friction), and such occurring right at the beginning of its own forming.
How Muslims behave is not uniform across cultures and countries either, given that dress codes are optional for many Muslims living in the more progressive nations but where we have countries like Iran or even Afghanistan where the strictest dress codes are imposed on the female population - and varying implementation of such dress codes in between. We also have many Muslims apparently living in countries where homosexuality and other such are accepted and tolerated but where in other (predominantly authoritarian religious) countries such is illegal or where many could face criminal charges - even as to the death penalty.
So Islam is not some uniform and exceptional religion as you would like to depict it to be - and this is not even going into the history of Islam being just as violent and involved in wars as so many other religions have been. So why would anyone who wasn't wielding an axe for Islam not see Islam as just another religious belief - even if it had as much truth or usefulness as many others might?
At 18, if this is your age, you just come across as an indoctrinated and less knowledgeable person, and perhaps one who hasn't lived amongst those enjoying considerable more freedoms, tolerance, and/or benefits than one might have in many Muslim countries. Like to answer why the movement of Muslims is more to these more free countries than in the reverse direction?