See, here's the thing. To say that it randomly pops up is to say that there was nothing supporting its arrival, it just happened. Like, if a woman gave birth to a child but never procreated, then that child's birth would be pretty random. And there's scientific proof that it cannot just happen like that. However, if the right process is met, then a child will be created. So who said that RNA was randomly created? It might have very logically developed in nature. The idea of it all being at random is completely demolished by the chaos theory, so it'd probably have been a bit more coincidental than random. And coincidences deal with probability above anything else. What's the probability that a ball of rock can be swishing through space and be picked up by the gravitational pull of a star and at just the right distance be able to develop what would some day be multiple degrees of life? Pretty slim, but there's still the chance.

Besides, even the Vatican has begun agreeing with evolution.
http://www.cathnews.com/news/601/68.php
http://www.aloha.net/~mikesch/darwin.htm