I know you know you better than I know you but have you ever considered that the event changed less than you have? There's a lot of things I liked even 10 years ago and when I try to revisit them I think they suck. More and more I've come to the realization that what has changed really isn't that much worse and what I like that hasn't changed just doesn't appeal to me anymore. I've never been to burning man but I've done other counter culture events and I can see how much I've changed in them.
The event has changed, drastically.
My first year, there were 8,000 people on the playa. The ethic of "no spectators" was strong. Very strong. Of course some people had less to contribute than others, myself included. I understood what I was supposed to do, but not to the degree. My next many years, I was much more involved in creating things for the community. One year I took a month off, and worked for the DPW - I worked on the crew (of 4 people) who made the giant spheres surrounding the man in '99. Other years, my friends and I would take our tools, and spend the day fixing art cars, bicycles, and other broken stuff.
The last time I was there, the level of participation had fallen dramatically. I won't go into great detail, but the number of people showing up for the festival has gone up in relation to the number of people creating the festival. I'm not just talking about rangers, dpw, dmv, etc. I'm talking about people setting up art, making *interactive* theme camps, and other things that involve more than just making their camp a "cool chill zone with a rad dj".
Sure, I've changed too. But the event is not what it once was.