Total stars in Universe is rougly equal to the total number (ever) of human cells.

[Wyrd of Gawd]

Excellent points.  The term "universe" (such as observable, non-observable that is spatially connected, non-observable, non-spatially connected, etc.) mean different things to different physicists and astronomers.

In any case, the observable Universe is really big, and the number of planets is even bigger, and yet, some dude in 1st century Palestine was the creator of all of this???

Yep the observable universe is FUCKING GINORMOUS!

And no invisible sky wizard needed to make observations of it either.

It's estimated that there is around 200 Billion galaxies in the observable universe.  So for purposes of visualization imagine that each galaxy occupies on cubic foot of space.  Therefore 200 Billion galaxies would occupy 200 Billion cubic feet of space. That equals a sphere of about 7 miles in diameter.  That's a pretty large ball isn't it?  Now imagine our planet in one of those cubic feet.  You might have to use a powerful microscope to see it.  

Now do the same exercise to caluclate the size the sphere would be if each star occupied one cubic feet of space.  Who knows how large the sphere would be if you did it with the possible number of planets in the observable universe?