There is nothing that compares to the spectacle and scale of Burning Man. I don't care who you are, if you find you possess both the inclination and means to go to Burning Man. Do it. It's truly an unmatched experience of art and people and expression.
My last visit to Burning Man was in 2009. This is the Portal of Evolution. You can now see it in downtown Reno, although rusted it loses some of its organic grandeur.