You have a solid, confirmable basis for everything you believe? Not!
Nor do you -- but perhaps we might consider whether or not some measure of probability -- based on real and available information -- might at least give us reason to at least posit a likely guess.
Let's start with the origin of the universe.
You may, if you'd like, but trust me, at the end, you'll be no further ahead than I will. You will still "believe" in a magic creation with all kinds of intent and design and purposes of all sorts, yet you will have absolutely zero evidence for any of it -- beyond the writings of some ancient people who didn't have enough science to know how to brush their teeth properly, let alone understand the universe. After all, if I recall, they believed such silly things as the stars being little lights in the "firmament of heaven," openings through which the light beyond could shine through. That, at least, we know of a certainty is completely false.
1) What do you believe?
1a) How has your belief been confirmed - scientifically?
Why does it matter what I believe? Isn't it more important to simply ask questions, look at the data we have, and see where that takes you? For present purposes, we can certainly use Hubble's observation that in general, with a few local exceptions that can be ascribed to gravity, the galaxies in the universe appear to be moving away from each other (recently updated to moving away from each other at an accelerating pace). Now, we can also make a simple observation by doing any experiment at home -- if all the objects on a table-top are moving away from each other, and moving away faster, the farther from the centre they are, then it is really most reasonable to assume that they were all closer together a minute ago, and much closer together 10 minutes ago, and all so very much closer together an hour ago -- and so on until we can only conclude that they were all in the same place at some (calculable) time in the past.
And since that's what we can observe, it's not such a stretch to suggest that the theory of the Big Bang has at least some good reason for acceptance.
Now, what was before that? You got me -- I have no idea. And here's where the science-minded and the religion-minded part ways -- I'm quite comfortable saying "I don't know." Others can't live until they've got a definitive answer -- even if they have to make it up and then, as you put it
believe it.
Note: 'Confirm' in my usage means to have no doubt - at all.
The science-minded
always have doubts. The religious-minded seldom do, even though their evidence is hugely less valuable than ours, which is quite odd, when you think about it. It's one of those things that really should tell you that you don't really know, and you don't really care that you don't know, because you've got your comfortable (if completely fabulous) certainties.
2) In whatever you believe about the origin of the universe, please give ALL of the scientific details.
BTW, no theories please.
Demonstrating beautifully your complete ignorance of how science works. And therefore, completely unanswerable for reasons that I won't be able to help you understand.
Romans 1: Because, knowing God, they didn't glorify him as God, neither gave thanks, but became vain in their reasoning, and their senseless heart was darkened.
And what on earth did that have to do with anything you've been harping on?