Christians, why do you mistake the word Theory with Hypothesis?

Well, it's actually the Creationists who do this more ofter than not, and I would venture to say it's because they are arguing from ignorance. You can bring up these valid arguments all day long, but they'll probably just stick to their knee-jerk sloganeering. Sorry. I know you wanted them to take a hard look at what you are saying and realize their error, but it ain't gonna happen.