[trebb]

Because there is enough hard evidence elevating the big bang and evolution to the status of "theory". However, there is none for creationism and ID. So they cannot be competing theories.

The evidence is so hard, that there were recent articles that spoke of anomalies that might not fit current theory. Once again, where did the original matter come from to allow the Big Bang? There had to be some originating source. Unless you want to take it on pure faith that it always existed...

[RadioAstronomer]

Here is a good place to start. :-)

http://www.astro.ucla.edu/~wright/cosmolog.htm