They aren't having any children, so it's hard to care about 100 years from now.

The argument is, why would the common folk care about the future? Why should they be the ones making the sacrifices if hardly ever they any benefit? None of this concerns the type of person that can easily just move on to green technology, of course not, I am not talking about your average HN user, I am talking about the people that has become ever more invisible, poor and disenfranchised.

For these people, what does the future has to offer anyway? Why do think people are not having babies anymore?

If you live day by day, and that is all you can afford, what kind of future you think people going to try and cultivate?