Caring for cast iron or carbon steel is fairly difficult and not something most people actually want to do. In practice hard anodized aluminium is the best compromise for people that aren't cookware geeks.
When I cook with my cast iron, I wash it by hand using regular dishwashing soap and a non-scratching sponge. Dry it and then coat with a bit of oil before storing it away. Easier than caring for my SS where from time to time I need to use Barkeeper’s Friend to bring it back to its original looks.
Stainless Steel is also somewhat hard to care for.