To Joe:
I think the word you are looking for is "Fellowship." And it's very important!
And I'll tell you something that is a personal observation, mine alone. I can get that feeling of fellowship from ANY Catholic Church. Because I KNOW what will happen in every single Mass. The order, the ceremony, the rituals, are the common thread, no matter where in the world Mass is celebrated. And when I attend, I'm a PART of that. Throughout the entire service, there are portions where the priest and the congregation interact. The priest will say something, and the entire congregation, as one voice, responds. I may never have seen the people in the Church before, and I may never again; but for that service, we are ONE. And as each person goes up front to receive Communion, I rejoice in my heart, for that person BELIEVES in the Real Presence. All of us KNOW that bit of bread the priest offers is the actual Body of our Savior.
I made a pilgrimage to Lourdes, France, when we lived in Germany. It was an international gathering, people from all over were meeting together there. Masses in all languages were offered at the different chapels, cathedrals, and churches at the grotto. On one of the days, I was at the grotto and an ITALIAN Mass was being offered. I don't speak Italian. Yet I could tell by the inflections, and the motions of the priest, and the responses of the people, pretty much what was going on, the entire time. When it was appropriate for the congregation to answer the priest, I answered, too. In English, mind you, but I did answer. And I still felt like I was one of the family, of the Body of Christ.
I love that.
Peace be with you,
~VOW