[LightDestory]

I welcome the asteroid!  

Well, If something doesn't change soon I will agree with you.
I am very pessimistic about the "change", humans are able to set fire on Amazon forest, we KILLED the most important biologic space of the planet (I am not special, I am human too, so I used "we"). Do we have the right to live on this planet? I am not a crazy person but I think that if I could catch the ones that have set the fire, I could be denounced for "inhuman treatment" against them. But can we call these "dangerous" lifeforms, human?
Answer:
Yes, that is the human behavior since our existence. We are dangerous, we know that lifeforms can't beat us in anyway if we decide to do something.

You can think: "We are not all dangerous, only few are like that. I am not the same." 
Well, why the Amazon forest got in fire? 
The government changes the penalties for that crime.
Why we can't operate to save the Amazon forest?
We can't operate on other government land.

Who created government, who privatized lands? 
Humans

Our creation are affected by the same problems: corruption.
As I said, our main thinking is about money and our own living.

We can think the Asteroid as a cure to a very dangerous illness of our planet: the parasite knows as "human being".