However, I think that the second order effects need to be considered. As I mentioned in another post, sometimes you doing a thing makes it easier for others to do a thing, until a critical mass brings about a major change in state. For example, buying a fuel efficient vehicle encourages manufacturers to produce them. Eating and asking for vegetarian options encourages them to be offered, making it easier to become a vegetarian without being a stick in the mud. It can also change norms. Sometimes people won't do a thing because they don't want to go against norms. Like a guy out with his buddies ordering a burger instead of the salad he actually might prefer.

Also, if a wealthy person cannot justify extra insulation to prevent energy waste, i sure don’t expect a poorer person to ever take the idea seeiously.