>>326865Hey man, dead wood, downed trees, stumps, logs, etc can all be broken down by decomposers and turned back into organic matter (soil) that can then be used by the forest to grow new plants and shit.
Cycle of life.
But yeah, in regards to fires, this:
>>325343Leave no trace is a great principle that is extremely easy to adhere to. Do it. Pack it in, pack it out.
Plus most national parks are uber uber strict about what kind of fires you can have.