Is There a Final Causality?

I imagine that this may be one of the more difficult arguments for modern people to accept. I think perhaps because we've lost the sense of final causality. So when you take the fire example, obviously the fires act of heating is not anything extrinsic to the fire. It's simply something that fire does, given that what it is. That's precisely the notion of teleology, finality that Aquinas is working here with.