God sent the Prophet Muhammad (PBUH) to keep us on the Straight Path to God.
Muslims take God very seriously and actually enforce the Scripture as law, and Muslims accept Jesus and the Gospel.
That you call "liberal" is really just atheism and its influence. Even "conservatives" wave sodomy flags these days.
It sounds to me like you would rather be a Muslim if you take God and the Scripture seriously. You are aware of the Koran yet have you ever actually read the Koran? You will find it is true.