For all practical purposes it can be considered a fact. Now, I can still make a personal choice not to believe in evolution, but that doesn't alter the facts. Similarly, our personal preferences doesn't change whether or not God exists. Whichever is true is a fact and our personal beliefs doesn't change it. You have helped me prove my point.
Facts are what really matters.
Since personal preferences do not change the facts and since things are either true or false without regard for what we choose to believe, personal preferences mean nothing and provide no support for any other claim. When you insist God is either a fact or a personal preference, you are presenting an invalid choice and are completely wrong. If that's the case, I condemn you because you don't hold Bible-study classes in your house every Tuesday. Unfortunately, most Christians don't have the faintest idea what's actually written in their Bibles. Recognizing their rights and beliefs doesn't mean that you are practicing any tolerance of them or that you consider them to be the equal of your own.