[Dataman]

I like to ask them "Who designed the designer?" Suddenly something extraordinarily complex doesn't need to be designed

That question is not a difficult one. So I'll assume you are asking it. Short answer:

If God created time and the universe, He must have existed outside of time and the universe. Although everything in the universe must have a cause/beginning, God is the Causer and Sustainer of the universe and therefore the Uncaused Cause.

[Doctor Stochastic]

Special pleading. You did not offer an answer at all. How did something outside the universe come into being?

[Ichneumon]

Although everything in the universe must have a cause/beginning,

Unsupported presumption, but I'll let it slide.

God is the Causer and Sustainer of the universe and therefore the Uncaused Cause.

Errrnnt!! Conclusion does not follow from the premise. Thanks for playing.

Sure, his origin wouldn't be via anything *in* this Universe, but you've hardly "proven" that he therefore could exist without a "Cause" of some sort, from somewhere *other* than our universe.

That should be self-evident (although *you* managed to miss it), so let's go with an illustrative thought experiment. Let's say that 50 years from now, Einstein's great-great-grandson Fred figures out the holy grail of physics, the TOE (Theory Of Everything, which ties together and explains all physical laws). Along with winning the Nobel prize, he wants to put the idea to a practical test, so he rents time on the best particle accelerator of the day, sets the equipment just right according to predictions of his TOE, hits the "commence" button, and *poof*, successfully creates a brand new universe independent from our own, complete with its own space-time system. Cool. He names it Universe Betty, after his inspirational wife.

Now, ponder the situation. Is the following statement a logical conclusion?

If Fred created time and the Universe Betty, He must have existed outside of time and the Universe Betty. Although everything in the Universe Betty must have a cause/beginning, Fred is the Causer and Sustainer of the Universe Betty and therefore the Uncaused Cause.

Is this really true? Is Fred thus an "Uncaused Cause"?

Hell no.

Just because someone/something can manage to produce a new universe from whatever/wherever they currently reside when they decide to boot up a universe, that in no way proves that they must be an "Uncaused Cause". It only proves that if they have a Cause (and as far as we know, everything *needs* a Cause), it lies somewhere *else*.