It only makes sense to talk about good and bad under the right conditions.
Of course, pure racing is the best when it is lighter and has a certain strength, so carbon fiber, scandium alloy, titanium alloy or special aluminum are all ideal materials.

But cycling is sometimes more than just a sport like racing or off-roading. For example, a frame made of bamboo is used for artistic or to put it bluntly for decorative purposes.
For long-distance riding, the steel frame is basically the only choice (of course, there are also many hot packs for the steel frame). So in the absence of preconditions, this topic really doesn’t make much sense, unless one day there is a material that is light, strong, cheap, easy to shape and can’t be broken.

This concludes today, and we look forward to seeing you next time.