Weighing the Importance: Ecology or Astroid?

In class, we discussed the occurrence of a possible asteroid impact and its consequences in comparison to the consequences of Global Warming. Obviously, an asteroid impact would lead to more immediate consequences, as Global Warming would cause more indirect and less immediate consequences. Scientist today, say that the data shows our planet is undergoing a warming cycle. It is believed that this warming cycle is a result of human carelessness. Because of the nature of the consequences of the two events in question, our society is more likely to work to prevent an asteroid impact. There are several things we all must consider when jumping to conclusions on how unethical our society is when it comes to dealing with Global Warming. First of all, if an asteroid of decent size were to impact Earth, the entire realm of life as we know it would be over. Our technology can do nothing to protect us from the initial shock wave, the initial heat wave, nor the following cooling cycle. An asteroid impact would equate to the possibility of a total extinction of our species. Global Warming on the other hand would certainly lead to a loss of biodiversity, which would be a catastrophe. In terms of human consequences, the warming of our planet would most definitely lead to a change in lifestyle, however not necessarily an extinction of our species. Another factor to consider is the age of this science. The specifics of global warming have not been fully understood. In addition, we know that our planet has undergone multiple, major climate changes throughout its 4.5 billion year history. Instead of harshly condemning our society as ecologically unethical, we need to consider all the factors. In my opinion we should not have to stop our consumption of goods (including oil), but limit it to a reasonable amount until more is learned about the real causes of Global Warming. Also, I don't think we should have to choose between saving the planet from a chronic warming cycle or from an asteroid impact. Our resources are plentiful enough to tackle both issues effectively.