The steel fork I had was the original on the 1980's frame I had. It probably broke mostly because it was old, but at the same time shows i do have a tendency to give it a beating. So while steel is stronger than aluminum, aluminum will be stronger than carbon fiber, and cheaper.

And no dual chain rings, just flip the wheel and change the chain. The ratio given was just an example. I think I'll run something like 43t chainring with 15t and 17t cogs. In which case I won't even need a second chain. Might need an 18t instead of the 17t. Will have to test it up the hills to see which rides better.

And to the dudes being dicks, for real, do you have nothing better to do? I came seeking advice about which hubs would be smoother, stronger, last longer. I am looking for advice from people who have been riding longer than me, tested more products, have more experience with parts. If I wanted to argue and s**t i could just do that at home.

Thanks to the people who actually did help and gave useful info.