Let's take a look at world history. The youngest of the young earth creation scenarios, if we take Bishop Ussher's calculations into account, places the creation of man at 4004 BC. Christ came four thousand years later. We live two thousand years after that. Christ as messiah, with death, burial and resurrection is quite often placed as the focus of history. Why was the time prior to his coming twice as long as the time after his coming, assuming he returns very soon? If we take older earth creation time lines, Christ's place in history becomes an even smaller percentage of time.
It just seems a bit strange to me that if the application of Christ's atonement for sinners and the establishment of his kingdom are so important theologically, these things would apply to the minority of history (after the fact, of course). Why wouldn't God make it the dominant theme of a vast majority of history?
Contemplating this, I wouldn't be surprised if Christ didn't return for thousands of years yet. Or even tens of thousands of years. Hundreds? Every generation since the early church - and even the people at the time of Christ - has believed they lived in the last generation. But if it hasn't happened in 2,000 years, why not the next 10,000 either? Next week would be okay, too.