@grasscarp
//There has to be a start point.//
Yes but that's for the "what happened before the big bang?" thread. This one is (was) about "intelligent design". As jomifl pointed out, the focus was shifted onto abiogenesis.
It has now shifted again, onto the laws of physics/nature. The answer I was planning to give, previously, was that the various physical constants - the gravitational constant, the charge on the electron/proton etcetera - could have arbitrary settings, at the big bang but the fact we exist to observe the universe in its current form means that everything just happened to be set 'right'. Too much gravity, for instance and the universe would have collapsed back on itself by now and this conversation could not even arise.
That said, "It just is", in reply to "Why?" is one of those terribly unsatisfactory answers which everyone hates. I don't blame anyone for introducing spurious causative agents to explain it to themselves; it is when they try to palm off the same thinking to other people that I take objection. I get by happily without needing to resort to a creator to explain the existence of the universe and the sole 'purpose' of life is reproduction, as far as I can tell.
When the sun expands into a red giant, the planet will be toast and all its life, seemingly, futile. Let's just enjoy ourselves and nature's diversity while we can, eh? Creators are just a thing to disagree over or beat one another up about. Or worse.