I'll second the notion that the ecological role of fire in the pines does not apply to prescribed burns. A wildfire often kills the dominant trees in the stand, setting forest succession back a stage or two. Without it, shade tolerant oaks would eventually replace the pines in the canopy. The rare and interesting herbaceous plants also thrive in the sunlit conditions after a fire, as well as certain species of wildlife. Prescribed burns do not have this effect and are done purely to reduce fuel and prevent destructive fires. This may not be the most natural way to manage the pine barrens but the fragmentation of the forest by developmemt make it necessary in many areas.
As for firebreaks, it's true that few are wide enough to totally stop a wildfire in its tracks, but one of their most important functions is being a safe line to start backfires from, in order to fight the oncoming fire before it gets to the development you are trying to protect.
Alot of all this is unatural or destructive in its on right, but this in New Jersey. We just have too much going on in too small a space, and every faction has its priorities. Imperfect compromises are the result.