"People will get exactly what they deserve". What have children born today done to "deserve" the devastating consequences that are going to unfold? Your view is fascinatingly self-centered and ruthless.
Perhaps but I haven't seen any of my middle class friends taking their children to school on a bike or by public transport. And when I point that it is possible it is always "Meh, it is more convinient in my car and I am above that".
If people with children do not care why should I?