Although it is true that limitless desires are, in part, driving overconsumption in the world which is leading to the unnecessary destruction of the environment, yet is the realistic solution to expect everyone to just say, "hey, I'm going to change who I am and how I live my life!"? I think that to propose that everyone be less selfish to correct the food and energy crises is widly naive and, even, dangerous. To entertain the thought, what if policy-makers, and more broadly society in general, accepted such an approach, and if only 25% of the population followed through with it (not to mention that if that did happen the economy would crash and people would lose their jobs leading to unemployment, poverty etc)? I throw out the number 25 because how realistic is it to expect 80-100% to ensure that these issues will be resolved? Not likely. I think more pragmatic solutions are called for rather than hoping humanity is somehow going to seriously change its essence.