No reason justifies disbelief.

[bennyboy]

That's a bit of a misconception.  It's not that science -couldn't- answer those questions...presumably, science engaged in from outside the boundaries of our circumstance could.  It isn't a limit of empirical investigation, but a limit of our specific position, that creates this impasse..so far as we can tell.

It could be that if we somehow found a way to tunnel out of this Universe, we might discover a new meta-framework (NMF), and say, "Well, when X happens in NMF, then a Universe is created, and if Y and Z are true, it will be a Universe much like ours."

But infinite regress.  "Why does NMF exist rather than not?"  It's still the same question, and with no reason to believe that the next turtle, or billion turtles, will ever lead us to the answer.

And there's no evidence, pretty much by definition, that we could ever break free from the bounds of this Universe.  At best, we can make a faith-based statement: "We haven't done it YET, but it's still the best tool for answering questions about reality."