I've been aware of global warming since I was 7 years old and now as was then it is just a matter of fact, a big fact, but not one I lost sleep over, yet because I speak of it every now and then and other dangers that hold the fate of humanity in hand when looking for something interesting and important to chat about, some people close to me know me as a doomsdayer. As if I am the one who is insane!
Honestly, how can a person not care? How can you get up every morning, stop at red lights, kiss ass at work, take your pills in the evening, lock yourself inside your house, make sure no harm comes to you or your loved ones, pray or dream of happiness, shed a tear for yours or someone elses suffering, say please and thank you and how are you, keep your elbows off the dinner table, make sure your socks are the same color... and not give a damn that the world might be coming to an end?
I have this small and simple thought experiment I like to think about sometimes. What you do is, you try to look at yourself and your life, your hopes and ambitions, your joys and sorrows. You try to imagine how much it would suck if someone just snuffed that all out. Killed you. How much you'd plea. How grateful you'd be not to die. Simply, how valuable your life is to you. Its quite a big deal and you know it. Now you multiply the weight and worth of your life as it is to you, by the number 2. That value is now double. But that is only the addition of the other person. One other. Never mind that you don't value his or her life as your own but only as another, still they are a person just like you and so that weight and worth that you perceive of your own life is repeated in the other person whether or not you feel it. You don't have to be a saint to understand, you only have be capable of arithmetic. It's basic deduction, not altruism.
Now multiply it by about ten billion. A really very large number for the human mind. You cannot hold ten billion different things in your mind. Your two eyes cannot see ten billion individual things. That is only the people alive today, in this very slice of time, a very thin slice indeed.
Now consider all the people to come. Who knows how many trillions, quadrillians, quintillions, and more may come in the future. All of those loves, laughs, smiles, joys and experiences. That make every memory or feeling or thought you ever had seem like a invisible speck in comparison.
Again, how can you think that you don't care. Either one is insane, or one doesn't really understand.