My hypothesis

[ronedee]

Well, that could be any group. The major question goes unanswered.

It depends on how you phrase the question;
If you go for a generic, deistic deity it is effectively impossible to disprove, it's also effectively meaningless.

However the Abrahamic deity comes with a whole load of baggage, primarily in the form of scripture. So you can ask 'Is the scriptural account accurate?'
The answer is an emphatic no based on the archaeology. There isn't a single accurate statement from Genesis to Ezra, the whole lot including all the prophets and the existence of the monotheistic kingdom of Solomon are utter fabrications.
As such the entire Abrahamic concept has to be called into doubt and without serious evidence should be dismissed.

But, there again is a lack of proof or hard evidence for a host of subjects in history. Religion far out paces anything else in writing!

Its tremendously hard to believe NONE of it is true, given the voluminous editions its received over several millennia! 

I don't believe anyone thought of preserving much of anything architecturally 2000-4000 years ago....but maybe the Egyptians, Aztecs etc? 

And some parchment, with handed down thoughts, and revelations in words were considered enough for people that believed God would preserve His word somehow for them. In many ways they were right!

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The problem with your theory is that the "information age" has not given any info about the nonexistence of God. So, religion will thrive until it does. And if extinction is in the cards, it won't be because of Christians. It will be in spite of them.

The problem with your conjecture is assuming that religion is thriving, when it is not. In most countries religion is dying, albeit slowly in most. But the fact that apostasy is very high even in religions where the penalties for doing so is high (for example in the UK the highest growth community for atheism is amongst second and third generation immigrants from muslim majority countries), and the fact that most of Europe is either officially majority arreligious (like the UK, France or Czech Republic), or functionally majority arreligious (like Ireland or the Netherlands) and many other countries not far behind (for example in the US the fastest growing religious position is atheist/agnostic encompassing c.20% of the population) shows this to be a fact clear as day.

In fact it is only in theocratic dictatorships or other countries which enforce death penalties do we see religion clinging on, and oftentimes the arreligious in those countries are keeping their heads down and mouthing the appropriate policies out of fear of losing their heads.

I don't see the Christian religions dwindling at all. In fact, just the opposite! I remember 30 years ago the pastor at our evening Mass saying, "it wasn't worth keeping the lights on these days".... because there were 3 people there! Fast forward now, where the house is full. No seats! Also, recently I went to a protestant gathering with a friend, who wanted me to witness the turnout of young people. I could not believe my eyes. The place which holds about 1000, was full to capacity! It was like a Rock concert! Incredible. 

So, religion may be dying as you say in some areas. But, its certainly rising in others! The new generation of "young" pastors know how to appeal to the younger generation! And its working. Believe me indeed its working. 

A new angle is the "Love" movement! You will see this soon! And it makes perfect sense. In a spiritual way, and from marketing stand-point. People are just plain worn out from all the violence and hate. And Jesus is the answer, again to the masses!