My great theory is that we have times of more... stuff, yeah, stuff... and times of less stuff. Right now, we're entering into a time of more stuff. This affects not just natural disasters, such as impacts or volcanoes, but I also believe that it affect life, such as us, in the way we act and interact. And when the stuff hits the fan, as it is doing now in human events, we will also see great upheavels in natural events. More impacts, more volcanoes, more hurricanes, more wars, etc. It is a general increase in energy, increase in entropy, increase in... stuff.
Now, the question is, do you have your stuff together, or is it time to duck, cause the stuff is running downhill, straight at us?
There do seem to be cycles (Maybe celestial cycles?). Some of the cycles are so far apart that we have not noticed them yet.