Of course you don't, that's why I said OO is most likely the way to go.

I also spoke of more than simple state management - If you're modeling a system having several interacting entities whose interactions may vary based off that entity's current state - isn't simple state management.

You still don't have to go OO to solve that problem, it's just a very good choice in most circumstances.

Also, inheritance is not a core aspect of OO. It's a common aspect of OO and even a popular aspect, but it's not core. To wit, there are OO systems not having inheritance.