Actually, back in the 1960s, there was a need for songs from your own background, because people with no background were cocking things up out of simple ignorance. That was then, though, and with the growth and rediscovery of local heritage it's less of a problem. Where I live is on the edge of an area where the heritage is has bottomed out and will either recover or die, and so I do have to add something to that, for all that my family's from elsewhere.