UndeadToaster wrote:
Then what caused it? Either time, space and matter are infinite with no beginning or something outside of space and time caused it, which would be a god by all practical definitions.
Not true. It could just as easily be a physical cause that we simply can't observe. It's as easy to imagine real, physical causes as it is to imagine a magical being.
And given all of our observations thus far have been real things, or real interactions, it seems more likely to me that whatever our Universe is, it is also based on some real ... "thing!" Some physical phenomenon of some kind that we will never have the opportunity to observe--unless we're in a Russian Nested Doll type situation, of course.
For instance, we can't see black holes; we can only observe things around them. And those observations overwhelmingly support the notion that black holes are things; they're real. Predictions were made based on a collection of equations, and our observations match those predictions! Meaning even the things we can't see appear to be "things;" various collections of energy-matter in varied states.
Some other examples, like The Northern Lights, earthquakes, typhoons, everything we used to think was magic has turned out to be real, and explainable. And things we couldn't imagine, even those have turned out to be real! (quasars, rogue planets/suns, Galaxies, heck even the stars themselves turned out to be far-distant suns! Ten thousand years ago who'd have imagined that one? When we look even more closely it turns out that most of the stars are actually pairs or sets of multiple stars.
That's just my reasoning on the matter of "who made the big bang?" Your mileage may vary.