A characteristic of older folksongs, in most cases, is that we don't know their composers or authors. Older folksongs were written often with no commercial purpose in mind. They were passed down by word of mouth, from generation to generation.
Criticism may not be agreeable, but it is necessary. It fulfils the same function as pain in the human body. It calls attention to an unhealthy state of things.
Sometimes, the smaller roles in movies can be the most interesting. If you only take the stance that you'll only play central characters in movies, you'll find yourself not being able to indulge in that morally grey terrain that makes support characters so rich and interesting.

