Pausing for a brief moment of reflection, it's worthwhile to consider whether we really believe all of this about the Mass. Do I think it's the most important moment each week? Do I believe what has been taught? If so, it makes sense to spend significant time preparing for Mass each time I go. Extra time in prayerful silence, reading the readings ahead of time, going to Confession, etc. Everything important in life requires preparation. The Mass is the same. Similarly, the experience of the good things in life is only enhanced by taking time to savor the goodness after it's been experienced. It is worthwhile to take some extra time after Mass to savor what God has done for us.