The model prayer is not to be memorized in order to be recited over and over again. Instead, it furnishes a pattern for our own prayers.
وَهذِهِ ٱلصَّلَاةُ ٱلنَّمُوذَجِيَّةُ لَا يَجِبُ أَنْ تُحْفَظَ غَيْبًا وَتُتْلَى مِرَارًا وَتَكْرَارًا ،‏ بَلْ هِيَ مِثَالٌ نَحْتَذِيهِ فِي صَلَوَاتِنَا .‏