Maybe what we are truly seeking is a life of integrity. It allows for diferences, yet gives a more definite foundation from which to begin. To me, a life of integrity is one of intention.
People ask with each purchase if it is the best use of the world's resources.
The decisions of one car or two, one job or two, those new clothes or not, are all made in the context of their effects on the planet as well as the decision-maker. There might not be the one right answer for everyone, but for each the decision will be made with careful consideration. Quakers have been careful not to lay down dogma.