Also, setting an example can go a long way.
There is of course no guarantee that it will... but failing to set such an example does ensure a lot of things, few if any of them desirable.
Heck, aiming for a sustainable future must be better than the alternative - which far as I can see amounts to just hoping to postpone the point of utter despair without really having much of an idea of how much longer that will remain a practical possibility.
Quite frankly, we all deserve better than that. Every single one of us.
I grew up with a father who was in the Army during WWII, and I actually didn't even meet my own father until I was 3 because he was in the Pacific theater under MacArthur. One thing he constantly drove home to me was this: ****** or get off the pot! IOW, just don't sit there doing nothing about what needs to be done-- do it!
I see this same rule needing to be applied here, namely stop worrying about what others do, just do what we can do ourselves. And by ourselves, I also mean not just us personally, but also what can be done at the local, state/province, national levels, and also internationally as well.
Pollution kills many Americans each year, and much of that can be avoided. We know what global warming can potentially do, so just sitting around waiting for others to be responsible is illogical. There are many steps that can be gradually introduced that can help ameliorate these problems, but they ain't going to be dealt with if we just sit back and make excuses of why we shouldn't be acting on all different levels. Again, we need an evolution in this area, not a revolution.
So, sorry to be so wordy, and maybe I just should have said "I agree with you".