my commuting bike has flat bars with bar-ends. I've crashed a couple of times, both low-speed crashes where the bike landed on its side and the bar-end took a lot of the initial impact. In both cases the quill stem twisted inside the steerer tube. Easy to fix of course.
But I wonder about the safety of the handlebar. It's a standard mtb flat bar with 25.4mm clamp, mounted in an old quill stem (also with 25.4mm clamp).
The end of the bar is crimped, on both sides, where the bar-ends attached. I've re-attached the bar-ends, simply moving them inward along the bar to clamp onto "clean" uncrimped part of the bar.
Is it worth worrying about damage to the bar?