My wife and I have two children (four and 17 mo).
We took our first child with us when he was a year and 1/2 old and again as a 2 1/2 to.
Both experiences were very postive for us as a family. I think that was the biggest reason for us taking him. To have the expereince as a family and that is exactly what happens to us while we are out there. It was very differnt for us than years before. We stay together and enjoy doing 1o times more caretaking than normal becuase my son could care less. To him, the playa is just anouther giant playground. with a lot more open space, it made it easier for us to let him explore without interuption but the further from camp he got , the more nervouse we got for his safety. We noticed that our camp, and we did camp (no RV) was like a mimi home. We have a rather large carport and shade structures that were very nessesary during the heat and dust storms. A hourly routine of hydration pushes and lotion baths were both fun and a bit tireing. My son did not seem affected by the heat or dust so much except on the second year his eyes stayed red and irritaed for a few days, almost enough that we thought of taking him home early, but he never complained, rubed his eyes or showed signs that he was uncomfortable. Eye drops and saline were awesome to have.
He loved playing with the other kids in and out of kidsvillle and we met lots of great child friendly friends. We noticed that somepeople at burningman are childphobic and have uncomfortable rections to seeing small children out there. Maybe they are in an adult frame of mind, or they simply get the sense that it is unsafe or cruel. My wife and I both thought the only cruel thing about it was forcing him to wear clothes and keep his sun exposure to a minimum. It was a lot of work and we didn't get out to venture even remotely enough for our personal taste, but that was not the point of taking him. It was about just being together, wherever we go.
While my duaghter attended only in my wife's belly, we have yet to take her and probably will not for another year or to. The truth is, it is an expensive campout. We have found that we can have very simular experineces doing smaller more intimate campouts with burner and artist friends without suffering the heat and high ticket prices. It might be differnt if there was a way to go to burningman and still party like we did before we had children, but our party now includes them. We change to reflect their inclusion.

loition, saline, eyedrops, pain and allergy meds, good first aid kits, long sleeve shirts, wide brim hats, fully enclosable structure, three wheel baby strollers or trauiler with really good shading, lots and lots of fruity baby food (hydrates them). baby wipes and tub for soaking, baby pool, fun and cute cups and bottles to drink from cuase the only way to keep them safe out there is to make sure they are incredibly hydrated even if you have to use a syringe. If they don't wet a diaper ever hour, they need more fluid.

It's not all but It might help.
oxoxo
fucko