Asteroid that destroyed the dino's hit a very small target:
http://www.bbc.com/news/science-environment-39922998
It was shallow coastal water with a ground formed by a mineral called gypsum, that got vaporized and sent sulphur to the atmosphere, which created a nuclear winter way worse than wat would have happened simply by the impact. Had it landed in the Marina Trench for example it may not have ended the reign of the dino's
sounds like INTELLIGENT DESIGN to me.