That flies in the face of reason.
Had you been indoctrinated into the Islamic tradition as a youth, you would worship Allah and read the Koran today. But instead, you were indoctrinated into the Christian tradition, so you worship God and read the Bible.
If you don't recognize this truth, then I submit that you are deluding yourself.
Why do you think that religious belief and theology are always the result of indoctrination when there are clear counter-examples?
Unfortunately for relativists, Christ happens to be unique, essential, infallible, and easily superior in character to all men who ever lived. Millions that aren't even Christians realize he was the greatest man in history, but just don't want to accept his hard truths and unique claim to be the lamb and son of God. So they just say he was the greatest of all the prophets.
If you rejected it, does that make you nothing more than contrarion?
Would you have been a contrarion if born in an Islamic country? (If so, it would not have been for long.)
Of course, if you were born in an Islamic country, you wouldn't have been you. You would have been someone else. Thus, at best the question is foolish.
At best.
"The heavens declare the glory of God; and the firmament sheweth his handywork. Day unto day uttereth speech, and night unto night sheweth knowledge. There is no speech nor language, where their voice is not heard. Their line is gone out through all the earth, and their words to the end of the world...."
Who is deluded?