RE: Preflight??
I see it a lot. One guy here has a cheyenne. He jumps in and flys. One time he taxied through a ditch trying to get to a runway and bent all three blades on both engines, he never even noticed. Someone noticed it after he landed where he flew. He has done that 3 times. You think he would learn. Some people never do. We will read about him eventually. Hope he doesn't take anyone with him.
Had a guy crash one of my planes once. Ran out of gas on takeoff doing touch and goes. He actually looked in the tank before the flight and said "yep, has enough." He didn't use the stick to realize it was almost empty.
People get too complacent!