Okay, that’s pure speculation, but I would like to know how someone can sing a pop song but not chant.
For those who are comfortable with “pop songs” because of their upbringing, family preferences, church background, school music program, music training, or for some other reason, pop songs are natural and easy to sing.
Same for any style of music. I grew up with all kinds of music–classical, country, musical theater, big band, and some pop (mainly the Beatles, who have a large repertoire of very melodic songs).
I didn’t grow up with chant, other than in the old horror movies on the late Friday night “Creature Feature”.
Pianists like me generally have an easy time reading music–we’re the best sightsingers! I can read notes and rhythms at the same time, in any part.
OTOH, pianists are often (but not always) TERRIBLE at learning songs “by ear.” In churches that use Praise and Worship, in which there are no hymnals or music scores, just words on an overhead, we suffer! When my husband and I were Protestant, we started coming to church 20 minutes late to avoid the Praise and Worship time–we literally hated it (and still dislike it when we visit a Protestant church and it’s utilized in the worship services).
My organ teacher has his doctoral degree and over 50 years of experience playing church music, leading choirs, teaching voice and keyboards, teaching band and orchestra methods, and writing/arranging music. However, he, like me, is a terrible “ear” singer! However, he knows chant-but he was raised in the Episcopal church, where chant is still used.
Anyway, it’s just what you were raised with and also what you like. What you like is heavily-influenced by where and how you were raised. I believe that people can cultivate a broader music appreciation if their parents and other family members are open to different kinds of music (my parents were), but I also think that many people grow up listening to basically one or two styles of music, and don’t really develop an appreciation for music styles outside of their comfort zone.
I guess what you can glean from this post is that the reasons people aren’t on board with chant in the Mass are more complex than just “I don’t like it.” It doesn’t help when fellow Catholics say, “But this is the Official Music of the Church.” The natural reaction is, “Oh, so all the music that I’ve sung all my life is chopped liver? Really? My grandmother, God rest her soul, had Eagles’ Wings sung at her funeral, and I love that song and I always will.”
You’re up against something bigger than just a bad attitude. The technological age (starting with the Victrola and the radio!) has allowed people to bring many different types of music into their lives, and telling them to abandon all that and do chant in Mass is like telling people to give up eating their favorite foods and eat "“Superfood.” Yes, it’s probably healthier, but…