I think it's also worth adding.....you have to treat your cast iron nice!!! If you abuse it, it can be damaged. Heat them slow....you can heat them to the point they are literally glowing red....but you have to start slowly. Cool them slow.....don't take a 500 degree pan and throw it under cold water. Wash, dry and season....controversial topic....but find what works for you and do it religiously. If you are nice to them, they will last multiple lifetimes.