"Traditions exist due to folks being impressed by how THEIR forebears did things" ... I'm impressed by our forebears performed rock music, how it has evolved, how it transcended national borders,

I'm also impressed by the effort Michael Eavis has to promote charitable and environmental causes, something made possible by the popularity of the festival, which itself is popular due to the diversity of performers at the festival. Folk, rock, jazz, classical and dance acts from all over the world, all sharing the same stages.

Glastonbury is a celebration of diversity, of our multicultural world, of how these cultures mix and how amazing new music can develop. (although the choice of main stage acts is a bit questionable at times)