Agreed about purpose being a loaded term.

It's my, somewhat lazy, philosophical opinion, that there isn't any purpose and there doesn't need to be one.

I don't see why the universe would need a purpose for anything. Things are what they. Things changing state. Entropy.

I see reproduction as more of built in motivation to our system than a purpose as such. But that's semantics, and my purpose in life is not to argue about words! ;-)