Don't you see, if we keep expecting it, it won't happen.
Rapture is much like a watched pot and boiling
There's a tale (overly paraphrased here) of a convicted murderer, told by the judge "You are to be executed within the next month. You are now to be taken to your cells to sleep upon your fate, but due to the viciousness of your crime you shall not be told when you are to be executed until the morning of the day itself, so that you may be as unprepared for death as your victims were."
The condemned man, suffused with the art of logic, decided that he wasn't going to be executed, because by the middle of the penultimate day he would know for sure that he was being struck down on the last day, so he couldn't be due to be killed on the last day of the month. But given that he couldn't be killed upon the last day of the month, he would have known by surviving until noon on the ultrapenultimate day that he was destined to be informed of his fate the following morning. Which meant that he could not be killed then, either.
And so the logic re-applies itself as one rolls back through the time-line, and every possible day was excluded. There was no possibility that he could ever be executed without being sure that it was to be that day.
There are a number of different possible endings to this tale. But let's just say, for argument's sake, that the very next morning, he's pulled out of bed and executed. And boy was he surprised...