ID is one last desperate attempt to find a God Of The Gaps, before science closes that final gap. The Creator ceased to exist at the moment of creation. He converted himself into the physical universe, and effectively died at that instant. He died of boredom waiting for anything interesting to happen. If you are going to invoke the supernatural, then the idea that there is an individual creator for each and every sub-atomic particle is just as plausible as there being one big one that made everything.
Many religions have numerous gods, each being responsible for a different part of the universe.
It is also possible that one Creator made the universe, which was then taken over by another omnipotent critter - a caretaker deity. It is an unjustified leap to assert that there was a single creator, and that creator must therefore be God as described in the Bible. Again, the creation stories of every other religion, extinct or extant, are equally plausible in this context. There are, for instance, far more beetles and bacteria that humans, and they have also been around much longer. Living things obviously do exist, but life could merely be an unintended or unimportant side-effect.