I'm guessing that a large majority of that 57% doesn't actively engage in energy conservation. If 57% think it should be encouraged (which I'd agree with), why not just do it? This seems like another one of those polls where the majority of the people polled have no idea what the details of the issues actually are, and they've gone with what they think is popular in the media.
What do you suggest they do, get solar panels for their house? Do you know how much that costs, along with the installation? Not to mention the people who support energy conservation but are living in apartments, how do you expect them to "just do it"? It sucks but if people are going to start seriously using alternate energy sources, they need incentives from the government in the form of tax breaks and subsidies.
