Without reason there can be no truth.
There can be truth without reason, and an individual may even know what it is; it's just that it would be impossible if not nearly impossible to prove it, and at this juncture I'm okay with that. As opposed to trying to "reason" something out in a vacuum you can extrapolate, form analogies, and observe reflections of the larger(macrocosmic) aspects of creation in some of the smaller(microcosmic) aspects, which otherwise may be hidden, more or less, and yes, at times you may even fill in the blanks for unknowns with such that seems appropriate - at least temporarily and move on.
And of course contemporary science is of use where applicable, but last I knew even that does not have all the answers, so, general inventory. What do you know, or, what does your strict reasoning yield to you regarding the following :
How do you explain eternity? What does your 'reason' tell you about things without beginning or end? Is the universe expanding, if so, then what is it expanding in to, and if not then is it static and eternal? Is God eternal or emergent? Where is God, and in what manner did it begin creating things? Can time be infinitely regressed or did that have a beginning?
Just inquiries off the top of my head in no particular order really; maybe not even all the best of them, but at least a start for now, and as Einsten said, "If you can't explain it to a six-year-old, then you don't understand it yourself.", and as you have so blatantly declared (paraphrased) : I am a stupid mindless idiot, so keep that in mind too because it wouldn't be very "reasonable" to speak intelligently to an "idiot" now would it?
We'll see where it goes from here, if anywhere.