Sallam Aleikom, I just want to say as an Iranian who moved to the United States at the age of 1 and have lived here for over 25 years. The most amazing and culturally rich section of Iran was the fact that it is 99 percent Muslim and has one of the richest Muslim Histories. In many facets of life Iranians that are Zoroastrian, Jewish, Bahai, and Christian use Muslim terms and customs. Most of Irans other religions are so interweaved with Islam that it is inseperable.
Iranian culture is almost synonymous with Muslim culture.
Some people may call Islam an Arabic religion. Even to this day people in India who are decended from Persians or who may be native Indian Muslims read the Muslim texts in Persian. Persian is the 2nd most popular Islamic language. If it was not for Islam we would have become a new province in the Holy Roman Empire. All that we hold sacred would have been destroyed.