@Anibyl It’s super strong when you try to bend it, but doesn’t deal with hard impact well at all. So, when bikes either fall over or go over curbs or land hard — you know, when bikes get ridden — it starts to reduce in physical integrity.

Why use it in bike frames? It’s super light!

Aluminum foil is super light too, but I don’t see people using that.

Steel and steel / aluminum alloy was and still is the best material. Superior to wood, which was original frame product for some manufacturers.

I find weight rarely matters, unless you’re doing the Tour de France or Whistler Gran Fondo.