Hooray...lets kill more trees...we need paper ballots...../s
Why can't we vote by simply raising our hands? No paper!
Paper manufacture doesn't require 'killing trees' when there are other sources of the raw materials.
Some papers are largely recycled.
Computer scientists found paper preferable to the electronics in a study publicized in "National Geographic":
http://news.nationalgeographic.com/news/2004/11/1101_041101_election_voting.html