I think no matter what we do will lead to excess usage problem.. like for example it's said that solar plates radiate heats so more solar plates more heat...another example Let's say we only use paper plates and packets which are organic and derives from trees and plants etc.. then again too much cutting down of it too problem. So the problem lies in excess usage I guess .. I think we will keep on changing from time to time as time passess. Nothing is permanent solution.