I was doored when I was a mere lad many years ago. No damage to car or bike, but my shin hurt like hell where it clipped the side of the open door. Fast forward 30 years, to last month, and I was in a collision with a pedestrian who stepped out in front of me from between two parked cars. He never saw me coming, and I barely had time to get out half a "hey!" before I plowed into him. Neither of us was seriously injured, although I was off the bike for about 3 weeks while all the bumps, bruises, and pulled muscles healed. I didn't heed my own advise that day, (MSTDASY*) and certainly paid the price for letting my guard down.
*Make Sure The Dumb Ass Sees You...