From 'The Letter to Bishops' (Given on the Octave Day of SS Peter and Paul)

Immediately after the Second Vatican Council it was presumed that requests for the use of the 1962 Missal would be limited to the older generation which had grown up with it, but in the meantime it has clearly been demonstrated that young persons too have discovered this liturgical form, felt its attraction and found in it a form of encounter with the Mystery of the Most Holy Eucharist, particularly suited to them.