We won't have to worry about cancer if we get hit by a big enough asteroid and have no backup plan... I hate to break it to you, while cancer is horrible and I

We won't have to worry about cancer if we get hit by a big enough asteroid and have no backup plan... I hate to break it to you, while cancer is horrible and I'd never wish it upon anyone, it's not even in the top 10 list of things that threaten our entire species. Hell, it's probably not in the top 100.