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mrv and @
Andrew R Stewart nailed it. You can't just look at the material in and of itself. The engineering/design that goes into a frame is going to be more important than just the frame material itself. You can make a stronger aluminum bike than a steel one if the steel one is poorly designed. A lot of the myths relating to frame material are from decades ago as well, when there wasn't much engineering knowledge available for aluminum, carbon, and titanium. The material advancements also didn't exist at the time. Steel was a much more refined product than the others 20-30 years ago when a lot of these "misconceptions" were true, and this these stereotypes gained traction fairly quickly. Now all these materials are fairly refined and one can choose a bike of any material to suit any application they choose.