Are you under the impression that environmentalists think that everyone should stop flying, driving, heating and cooling their homes, etc? Yes, you may find some radicals that believe things like that, but that is not a mainstream position. The mainstream positions are that consumption efficiencies need to be improved and production impacts need to be reduced.
Now, if your argument is that you think that it's unfair that there's such an economic wealth disparity that some people like Al Gore own private planes while many Americans can't afford a car, that so much of the world's production (and thus environmental impact) goes toward servicing the wealthy and so little toward the poor and middle class, and you think that government officials need to be voting for policies to minimize wealth inequality rather than huge tax breaks for the wealthy that give them an even larger share of the total environmental impact on the planet, then I have only one thing to say to that: "Welcome to the Democratic Party!"
But if you're of the impression that the concept of environmentalism is the same thing as reducing income inequality (and thus consumption inequality), you're sadly mistaken. Mainstream environmentalism is built around across the board improvements - things that effect everyone, not just specific groups.