what OP probably means is that there are hundreds of ones and twos and threes all the time and most of these are not due to tectonic shift but rather more localized geological events. The portion that are directly related to real doom are again fractioned as most of these are aftershocks not foreshocks.

If there is ever no earthquakes of any size it is because we are in the matrix lol. in other words short of a quantum event or spiritual intervention that would never happen.