Re: Simple question
Why one universe? Why would any event that can create one universe not create 2? or 3? or N universes?
That would depend on your definition of 'universe'. There are several.
And what if the things we can see is just the bit of our universe within the range of the speed of light
It is. It's what we call the observable universe and is the simplest of the definitions of possible types of universes. There are other universes out there, with the exact same qualities as ours, but they're positioned so that with the expansion of space their light cone will never intersect with ours and hasn't since hyperinflation.
Haven't we done the classic mistake of religion.... to think we're special, unique?
No, we haven't, and the idea that we're not goes as far back as Newton.
I ask again
Can I respectfully suggest you do some background reading before repeating your question?