Answering Atheist Arguments: If Christianity Were True, Everyone Would Be A Christian

I have talked with a number of atheists who really believe in and use the following argument  to disprove religion/God.  They will say:

Look, there are literally thousands of religions.  The very fact that all these exist, PROVES they are all false! 

Now this is actually a direct quote from someone on Twitter who is well followed and re-tweeted often.  Clearly this Twitter user’s opinion is respected.   I asked him to explain why he thought that the existence of multiple religions proved they were all wrong.  His response:

Reality isn’t subjective.  If there was any reality to one particular religion it would be unanimously accepted.

There are a couple of claims here so I will treat each, one at a time.

Reality isn’t subjective.  – Of course this is correct.   A claim about reality is either true, or it is not true.  Either Christianity is true, or it is not true.  It can’t be true for me, but not for someone else.  That is not logical.

If there was any reality to one particular religion it would be unanimously accepted.  – Is this really true?  Does something need to be unanimously accepted in order to be true?  I really don’t think an atheist would want to argue this way because it puts him in a difficult spot.    Here’s what I mean:  If something needs to be unanimously accepted to be true, then atheism cannot be true, since not only is atheism NOT unanimously accepted, but it is the minority opinion.   If you apply the claim to itself,  all of a sudden the atheist has no footing for their own beliefs.   This is not a good argument against the reality of anything.  Universal acceptance of a truth is not required for something to be true.

The very fact that all these [religions] exist, PROVES they are all false. – Its clear that the existence of competing views of reality cannot mean that they are ALL false.   All religions COULD be false  but by no means does it prove that they are.  

This line of thinking may be a good rhetorical sound bite, but it does not hold water against even minor scrutiny.   The existence of multiple religions does not help the atheist argument at all.  People who consider themselves the guardians of reason and logic should know better than to use this argument.