Compared to the proposition that God exists, all other propositions pale to insignificance. If God does not exist, then contingent things have no ultimate cause, and cannot therefore be either ultimately rational, or thus amenable to reason; so that no questions whatever can really be finally answered. If atheism is true, there is no truth (so that nothing truly matters, and we may do as we like).
Which means that, as self-refuting, atheism is necessarily false.
If on the other hand God does exist, then in the first place reason has a shot at understanding, and in the second – and, to my point, far more importantly – almost anything can happen, without violating the ultimate rationality of events. Once admit that nothing can make sense unless God exists, and agree that he must then exist, and you open the door to the entire panoply of phenomena to which religious people have always attested, and that seem so very unlike life as we live it from one day to the next: miracles, Virgin Birth, resurrection of the dead, you name it. If God exists, all that stuff is totally credible, because – duh! – he’s *God.* The Laws of Nature are his, and not vice versa.
Now this can be a thrilling realization, for it can open the door to a complete enchantment of one’s life.
But it comes at a great cost.
Once admit that God exists, and you are going to be forced to deal with all the questions of religious belief, now or later. Once you have admitted the existence of God, you are thereafter, like it or not, a fundamentally religious person, and shall have to decide how you will respond to all the religious questions. You shall have to take the claims of Christ and his followers seriously, if only to reject them.
It’s a big hassle, really. Easier to punt on all that. So atheists are never, ever going to admit defeat on the question of God’s existence. Once they lose that argument, all their other arguments shall fall apart, and they shall then have to decide about going to Church this Sunday, what they think about abortion and extramarital sex, observing Lent, all the whole tiresome moral rigmarole (as it seems to their veiled sight) of serious religious life. They won’t want that door to open, not even a crack. So, they’ll fight the notion of God’s existence with all their might.
The question of God’s existence is at the very hinge of the battle. Everything depends upon it.