Interesting question, and I'll relate a personal story about my own unwillingness to embrace an aspect of one of my arts.
I've trained capoeira in the past, for a number of years. I've drifted away from it now, but for several years I literally ate, slept, and shat capoeira. I was absolutely obsessed, and I could not get enough, training 7 days a week, sometimes twice a day. At that time I was one of the senior students in our school, ranked as a Graduated Student, which is something like perhaps a shodan in another art.
But capoeira is a funny art, and it has some unusual elements to it. It's not just a physical art with techniques and movements and stuff. Music is big in capoeira, and it's not recorded music. We make our own music when we play capoeira. We have an assortment of unusual afro-brazilian instruments that make the music of capoeira, including berimbau, atabaque, pandiero, agogo, reco-reco, and others.
I loved the physical side of capoeira. I couldn't do all the most radical acrobatics, but I certainly had my portfolio of crowd-pleasers and crazy stuff. I had a solid game and I was good at it, and I had a lot of respect in our little group for my physical game.
I liked the music as well. I have a couple of berimbaus of my own, and I picked up the technique of how to play and the rhythms pretty well, and I can hold my own on the pandiero (sort of a tambourine), and the atabaque (drums), and I can make do on some of the others.
But I don't sing, and therein lies the rub.
Along with the music, we sing these songs in capoeira, and they are all done in Portuguese, which may as well be Martian for all the sense I can make of it.
now, Capoeira songs have a call and response format. I don't mind being part of the group response. I can mimick the words well enough so my voice gets lost in the crowd and nobody really knows I can't pronounce the words. But I WILL NOT lead a song. I don't understand what I am singing about, I cannot pronounce the words, and under these circumstances I actually feel it is wrong for me to sing because I am just parrotting something that is meaningless for me and I am sure I am absolutely slaughtering the language. And on top of that, I just simply do not express myself thru song, and I make no bones about it. Some people like to eat sushi as well, and that's another thing I just don't do. Sometimes we draw a line in the sand, and across that line we will not step.
OK, I know if I was a good little Braziliophile I would learn Portuguese and learn to sing, and wear hip hugging sprayed on low riders, but I'm not. It just means nothing to me, so I've made little effort in that way. Maybe that's me being lazy, but I don't really think so. I think I've just identified something for which I hold ZERO interest.
It drives my instructor crazy, but she's one of the top capoeiristas in the world. Oh well.
I knew that it was an obstacle for any advancement in rank, but I guess I just didn't care. It was just hard to justify granting further rank to me, if I was absolutely lacking in that element of capoeira, which is actually considered an important element of the art. OK, so I didn't rank any higher (there were other issues as well, she would not rank anyone any higher who has not spent time training in Brazil, and i didn't feel inclined to make that trip either). So I stalled out at that rank, but that didn't really bother me. I was still welcome to train. But she would try to get people to take a hand in the singing. Many people were receptive to that, but not me. I just clammed up and waited for it to be over. That's just me.
I'm still welcome to come and train, altho I don't anymore. She would like me to sing, of course, but I won't. And there it lies, our little stalemate...
Just thought I'd share.