Psychonomy's comments on Tuesday's post reminded me of something else we've haggled over: the question of why we are here.
His argument - I think, anyway, and he'll no doubt correct me - is that a Cartesian, evidence-based perspective of the world has to begin with "Because I am even thinking this, I must exist in the first place". Cartesius did put it a little simpler.
This, Psychonomy goes on, immediately brings into play questions about the nature of our existence, our perception, and our relationship to anything and anyone else.
The thing is, goes the argument, that science can tell us how we are here - and detail the mechanics and mechanisms - but it falls short of providing a reason.
I think the idea of there being a reason is misguided. "Why" means "for what purpose" - something more evident in the Latin-rooted "pourquoi" and "porqué" of French and Spanish. "Why?" means "What for?"
We can look for and find motives in human activity - to get the money; for revenge; so as to spread DNA meme - and we can also find reason in the actions of other living things. Animals and plants can have motives; though care's needed not to apply our own motives and morals to their activities.
But as to why space is like it is, or why there was a vacuum fluctuation and then a big explosion, we're a bit stuck. "It just happens," is about as far as we get.
Grasping for a reason, though - usually that "creation" is all part of someone's grand design - is anthropomorphising non-conscious events. The universe didn't start for a reason, any more than gravity gets something out of us not being able to fly.
Our existence just happens. Best just get on with it.