Responding to both David and Rodenstock:
An average RC Sunday Mass runs anywhere from 45 minutes to 75 minutes. A weekday Mass with a short homily and rarely any music or singing, with a small congregation, usually runs between 25 to 35 minutes. Most RC churches have at least one weekday Mass every morning (including Saturday mornings).
I really should read that "why Catholics cannot sing" book! I think it would explain so much, including the thread on this Forum about the organ being too loud. Mea culpa for not reading it!! Rodenstock is describing what is still a long-standing tradition among Catholics that goes back at least 50 years (probably much further), whereby you attend Mass to get your ticket punched for the week, get it over and done with as quickly as possible, and then move on with everyday life. It is sad when even the priest appears to have adopted this attitude (as described by Rodenstock's post).
My parish is blessed with a more serious attitude where most of the congregation actually wants to be there rather than being there only because they feel obligated. Nevertheless, a significant number of them arrive late for Mass and about half the congregation leaves during the singing of the closing hymn. Perhaps a dozen people out of 500 will actually remain for the entire organ postlude. However, it is difficult to be Catholic and not always carry some of the "ticket punching" attitude with you. Some of us just make the best of it and enjoy good liturgy.
We do have a small contingent of parishioners who have a strong preference for Masses with no music or singing. They claim this allows windows of opportunity during the Mass for private prayer and meditation. But they will also freely admit that it makes the Mass ten minutes shorter. Most of these people also think that organs are only for playing barely-audible background music.
My RC parish has a Saturday evening vigil Mass (as do most RC parishes) and five Sunday morning Masses (including a Tridentine Mass at 1PM) and then a Sunday evening Mass. The first two (early) Masses on Sunday morning have no music. I would say that our parish is more active and musical than average.