I have had the honor of knowing a few Muslims who were more Christ like in their behavior than most proclaiming Christians. When I read the wisdom in the poetry of Rumi and Hafiz, I have no doubt that they knew Christ personally in their hearts.
Many Christians treat non Christians the same as the Pharisees treated Jesus.
MOST?
You have sampled them ALL???
Perhaps you meant 'a few'.
If it were only just about behavior...then most folks based on behavior might get a pass. Even Satan can appear as a model angel of light and he may even be most sincere regarding his rebellion against GOD and may have personal behaviors that are better than any Godly Sunday school teacher....which is probably why we are warned against pronouncing a Judgment against Satan(If Michael the ark angel wouldn’t...then why should I presume to-besides the Bible states he is already judged!)
The Bible speaks of one who, in the parable of the wedding feast and garments, was found without wedding garments, and when confronted was then cast out into outer darkness. I hope that your cherished Rumi and Hafiz, having strong spiritual insights, aren’t found at God’s wedding feast without their wedding jackets...simply being at the party isn’t enough!