We cannot expect that the ritual prayer should fit the measure of each person in every place.
Indeed, the problems of the specific generation or of the individual are scarcely hinted at in the traditional prayer, although every person can find the appropriate word, phrase, or sentence that speaks especially to him.
This public worship, which is heard as a single voice, is the result of the choir of the voices of Jews of every era, in which each voice joins, according to its own pitch and tone and volume, to the general song.
–Rabbi Adin Steinsaltz
From "Modern Man and His Prayer" in On Being Free by Rabbi Adin Steinsaltz