The pilot reported he was departing from a remote airstrip in a 3-4 knot left crosswind. After the airplane started its takeoff roll, it drifted left of the planned takeoff path and into low lying brush adjacent to the airstrip. The pilot continued the takeoff roll while correcting to the right with no results. The airplane became airborne, without enough airspeed to maintain flight. The airplane descended downhill and impacted brush and terrain. The airplane sustained substantial damage to both wings and the fuselage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.