Evolution has evidence to support it, creationism doesn't. If you have to appeal to faith and not evidence, you've already lost the argument.
If you say "creation must have a creator" and don't immediately see the flaw in that "argument", you're not fit to even be a part of the discussion. It's called begging the question. You're assuming your conclusion in your argument. If I start with the unsubstantiated belief that we're the product of aliens, well, I can say: "Alien offspring must have alien predecessors, therefore aliens must exist".
Stop. Start all over. Get a clue.