We have a cycling liturgical year because the truths of our faith are larger than we can receive all at once. Perhaps ashes say it best, but even they can’t say it all, not all at once.
Reading sacred Scripture or watching a televised Eucharist can be powerful meditations, but neither rises to the level of sacrament, the mystery by which Christ promises his presence to his church.
Consider the countless souls, those alive today and all those in generations past, who have never been given an opportunity to respond to the Gospel the church preaches.