Many people learn from written music because they just don't think they can learn by ear.
It's interesting how for some people the idea of learning by ear and not using written music is scary, and to some seems downright impossible, whereas to others it seems to be the natural method of learning tunes. Well, everyone can learn by ear, although some people may have to work at it a bit more. Here we look at the issue in more detail.
The Evening Dance at Maine Fiddle Camp
Those fiddle tunes we play are mostly dance tunes, and I don't think there's anything a whole lot more fun than playing for a contra or square dance! We have a dance nearly every evening at Maine Fiddle Camp, with some of the finest music around. Campers are welcome to sit in with the staff.
Learning Tunes (By Ear & Reading)