because they're wrong, it's a false religion, mohammed was a demoniac we were warned in scripture, in acts of the apostles: even when an angel comes to you and denies that christ's sacrifice on the cross and his resurrection, it's the spirit of antichrist. this warning was written specifically for what would happen to mohammed 600 years later. if you doubt, look at the fruits. they obviously lack logos. you don't get to enforce your beliefs by the threat of a sword. it's a denial of god-given free will and freedom of conscience. to top it off, they put limits on what god can and can't do.
Belgium