LilQueenie:
40-50 years ago, people smoked without having to think of lung cancer.
40-50 years ago, the world had something like 3 billion people. Now it has more than 7 billion... can you believe it? more than double?!?!
40-50 years ago, people thought nothing of gas-guzzling cars and CO2 emissions.
40-50 years ago, it wasn't so obvious that we're actually running out of resources.
I could go on and on...
Basically, 40-50 years ago, people were completely blase of how tough the future could be, and what impact they have on our planet. Today, we do know more, and it's a little irresponsible to close your eyes (and have as many kids as possible just because you want to) when it is actually the DC who will suffer most.
Their future will be impacted by the following equation: more people = more competition. Resources, jobs, etc. are limited after all. It would be a dog-eat-dog world. People are already complaining about the Tiger Mums now. Well, wait until that becomes the norm. How do you feel knowing that in future, your DC (or grandchildren) may live in a world that's no longer sustainable because the previous generation just wouldn't stop breeding?
Oh... and just to point out something that was in fact better 40-50 years ago: people were much less reliant on the state to pick up their bill. Much less entitled people walking around with a Croydon facelift and fag in hand while living on benefits. Maybe that is why back then they gained that sense of hard working attitude?!?
I personally believe that in two hundred years time, our times (and even more so... that of our parents) will be seen as the golden era for humans where standard of living was at its highest. This will be seen as an outlier, and our grandchildren will most likely have to do with a more dire world.