Ah! Okay, excellent. Thanks for the clarification.
Yes and no. It means that I can't prove that it is fake, yes. I can still form an opinion.
There's a number of factors. First, I have ruled out the idea that God likes to run around performing miracles because I can't find any proof of it and so, in the absence of proof, I default to the status quo of "Things Aren't Magic". After that, I look at the philosophy. Many religions have a rule that tells you to not be a jerk, which I approve of for several reasons and seems to serve a purpose in society as a whole.
Where they disagree, I ask myself if I can find justification for those beliefs. Homosexuality is evil? Hmm. Well, how would that manifest in society? What evidence might we point to? If there's none at all and the answer from the religion is "No impact here, it's only bad in an unobservable way and you'll be judged for it when you die" then I have to decide if they seem to be a credible source.
That brings me to the question of whether or not I think people can commune directly with a divine source. Again, I've seen no proof of this and the status quo says people don't chat with god so I say they're almost certainly making it up (or confused, or insane, or whatever).
The church I support is a lovely little United Methodist community. I don't agree with them on all things but that would be the case with any church I went to. The reason I attend is that I agree with them on the underlying philosophical points whether or not their religious reasoning is true, and they are good at making me stop and think about important issues in society. Left to my own, I might not self-examine as much and I think there is benefit to that. Furthermore, in the church I attend they openly encourage people to doubt and question as a means to spiritual growth. They don't insist that they are always right and don't think the bible was divinely guided or anything. That means I can attend for the examination of moral responsibility and social awareness without worrying about religious claims.