I mean, the way you put it makes it sound like you think it very obviously doesn't. But are you willing to grant that maybe there's some very complicated optimization function for life satisfaction/personal fulfillment/eudamonia/whatever the hell you want to call it? It doesn't have to be practically computable to be interesting, you merely have to be able to do your best to approximate it.

If you deny the existence of any such thing, isn't that tantamount to saying that given the choice between two courses of action, there's never a reason to pick one over the other?

I mean, I feel like as humans, we're trying to follow fuzzy approximations of that function all our lives, whenever we're earning money, or spending time with people we love, or whatever, we're doing it because we think it will bring us happiness or life satisfaction or something.