Nesting instints of humans

Just returned from a week at Tantangra which was fantastic, the area is recovering from fire damage this year.
But why do people build a nest of rocks light a huge fire, then dispose of all their rubbish into the fire. Do they really think they are doing the right thing or maybe they just dont care.
The ones hooning arround in 4wds doing donuts etc seem to be the worst offenders. these same idiots usually get bogged in the swampy gullys and expect you to retrieve them.
I now pretend to own no recovery gear but will extract them if they have any. In thirty years of visiting this area I have never needed help to extract my vehicle
Cheers Pete