We have pretty good empherical evidence for the speed of light. If that speed holds true, then all of the observable universe must be within 4000-6000 light years from Earth, since some star maps date back at least a couple thousand years. So all those galaxies and stars are crammed into a pretty small space then, wouldn't you say? How does our Milky Way, estimated at 100,000 light years across, fit into the 12,000 light year wide universe, let alone the other 100 billion or so galaxies? 100 billion galaxies each with 100 billion stars is like 10 to the 22nd power, and a 12,000 light year diameter universe has about 2.3 x 10 to the 18th power cubic km, so there should be a star every .00023 cubic km. I thought stars were a bit bigger than that. Of course, look at the sun, it doesn't look very big, only a couple centimeters wide, so I guess the earth really is only 6000 years old.
You're trying to tell me that creationism -- especially of the young earth variety -- isn't believable? I mean the evidence is so beyond overwhelming there isn't really much we can do except laugh at these people. For goodness sakes, we have actual tree ring data going back 5,000 years before the supposed creation of the world.