It is good to participate in a popular devotion
because the devotion is popular (of course, this is defeasible: theological unsoundness would be a particularly important defeater). When one participates in a popular devotion
because it is popular, one is thereby united in will with the community in which the devotion was popular. This is true even if the devotion involves something kitschy or a little garish, and such cases highlight the need to see the devotion from the point of view of the community which gives the devotion its life.
When the devotion is centered on a saint, that deepens the community aspect by extending it beyond death.
From this point of view, I think I can now understand the ways in which we pay respect to Mary under many appellations like "Our Lady of Czestochowa", "Our Lady of Mount Carmel" and "Our Lady of Perpetual Help." For the different appellations connect one with the different overlapping communities (ethnic, monastic, etc.) that are inspired by that aspect of our Lady's character and life. And part of the
richness of the life of a large vibrant community like the Church (or a nation, for that matter) are the overlapping smaller synchronic and diachronic communities found within it. Just as it is good to have particular friends, it is good to identify with multiple particular communities. All if this fulfills us as the social animals we are.
Thus, those Christians, especially Catholics, who focus on the horizontal aspects of the Christian life, who take the notion of community as central, should love popular devotions. (One thinks here of Fr. Andrew Greeley as an example of this love.)
