cofty, for one thing, it adds pleasure to my life, and to those with deeper feelings than mine, those that have the privilege to work in the sciences, see the fruits of their labours, because it seems to be in harmony with the big SCHEME of things. Things are working out, and I am a worker.
On a grander scale it is like the enormous stone works of the past, in the Orkney's, Stonehenge, the Pyramids, Easter island. we do not need ALL these ancient builders any more, but we would not be alive without them (one of the "Daughters of Eve" was discovered in the Faroes),
and they left these monuments to remind us, or just to impress, or just because building was fun, satisfying an addiction.
The creator might not be a god at all.
in practical terms? It is comforting to see that nature is not tinkered with, by talking snakes, water canopies, graves opening.