You have a point, but I can think of one Parish in my Diocese which has a very modern (some might say "modern ugly barn" Church) that has had many vocations. Do you know what is special about that Parish? It is ethnic, composed largely of Italians and Spanish-speaking people. They have a "family" atmosphere which is not "faux" due to "greeters" or "after Mass coffee and donuts." What we lost after World War II was the ethnic enclaves which fostered identity. The Irish went to four Churches, the Germans to two others, the Poles to a half dozen others and so on. That sense of being part of something "apart yet within" the entire Church left its mark. Just watch the movie "The Deer Hunter" to see that being played out with Ukrainians in an Orthodox setting in PA. Or check out Boston or New York which had great ethnic parishes. I think that explains a great deal too: that we are One (Catholic) but composed of many nations and nationalities. We have lost that in the US. We are now from everywhere and share only our Faith. The "family-ness" is gone.