Unless of course “goal seeking” is simply an emergent property. Crystals and fire grow, so far as we can tell, from purely naturalistic processes, and yet we don’t ask “why do those molecules form an organized structure” or “why does lightning ignite wood”. Once any process starts, it either consumes all the matter and energy it can and then ceases to be active, or it continues in a feedback loop. The problem with at least some strains of metaphysics is the desire to take a big ontological position and then try to explain the minutia of physical processes by the same principle.
I’m with Hume. i’m sure metaphysics has some sort of utility, but thus far I have yet to see metaphysics produce a single concrete concept that I would considerable useful in the real world. Yes, science, even evolutionary biology, inherently sits on top of some sort of metaphysical premise, but the beauty of science is that it doesn’t have to sit around like Aristotle pondering the fundamental nature of existence to actually produce useful concepts.
So far as I’m concerned, the only use of metaphysics at this point is to analyze the starting conditions of reality itself, but using it ask questions about why a parakeet sings, a human builds a boat or two chimpanzees have sex is to make metaphysics look pretty silly, and even more useless. Metaphysics, maybe, just maybe, is interesting for big picture questions, but sadly, it does not appear that life itself is actually that interesting a question. It’s a tough nut to crack, but it’s hardly the only tough nut to crack.