Population needs to be controlled. Just wait until India, China, Nigeria, etc all start wasting resources like middle class western world.
Note that a good way to naturally control populations seems to be to develop a western style middle class and watch as birth rates fall.
There is only so much wastefulness to be cut down. We would still be hitting carrying capacity limits even if we all lived like eco-monks.
Do any of those w- have incentive to do so?