Its easier to ignore the problems of people far away then it is to care about them.
ANd for many people, the lies that bush and others in power propagate are much more appealing to believe the cold hard truth that the world is a run away train right now, careening out of control. We've got comfy seats and we're well sediated so we don't notice, but we'll feel the impact eventually.
If the human race is still around in 40 years I'm going to be extremely surprised. Relieved, but surprised.