Convenient, perhaps, though I believe Thomas' comment to be essentially true never the less. When one is dealing with a physical creature, physical evidence should be available to prove its existence. In the last 50 years the mounting technology available to most average people in industrialized nations means that today about everyone is carrying an object that is phone, camera and video device all in one.
And yet still not one shred of evidence for the Bigfoot. Not one single clear picture, or piece of verifiable video. Not one dead carcass, not one instance where a lumber truck traveling from the back country has accidentally hit & killed one. Normally absence of evidence does not mean evidence of absence but in this case I tend to think otherwise.
Gods on the other hand, by their very nature, do not tend to be physical entities that roam our planet. Though a lot of them didn't seem to mind traipsing around millennia ago. Since then though they have gotten rather shy of showing themselves on this plane of existence.
Since this is the case, the demands for their evidence cannot be the same as for a physical creature that supposedly do roam our planet to this day.
Not that I don't share your frustration. All of the Gods, not just the Christian one, do themselves a disservice, in my opinion, by not visiting once in a while.