Too Many Meteor Strikes in 6k Years

My understanding is that there have been many cataclysmic events since life comenced on this planet. Between meteor strikes of which we likely only know of about 25% (just and uneducated guess based on the ones we haven't found and the ones that hit the water), volcanes and earthquakes I would think that we have had a number of events that would have wiped out all but the basic organisms.I'm not trying to make a point here, but just asking a question. If life on the planet was continually being set back to the starting line has there been time for evolution to produce the creatures that it has?

Thanks for the answers. I guess as we merrily chug along we can expect this to happen again. I recently read about Yellowstone and that looks like a likely candidate.