I listen to a lot of music recorded by people like us... enthusiasts but not pros. Much of the music is quite good, but much of the singing is horrendous. I suppose these people are too proud to imagine they might benefit from a little help in the pitch department... but whether they do or not, I stop listening as soon as I hear the first funky note. I suspect a lot of people do.
There is so much truly top notch music competing for the same ears... if you want people to listen to your music, it needs to be nearly perfect. As Kemmrich said, the pros are ALL doing it, and they're better than I am.
If you're serious about music, The stakes are too high to miss the mark in any way whatsoever
We live in an age of technical excellence. Bows and arrows can't compete with laser guided missiles. In every arena, the best technology wins.
again, all of this depends on the end goal. A tribe that values tradition more than winning might prefer to get wiped out by missiles rather than pursue the latest technology.