You Don't Have To .

Photo by Laura Favrow - http://www.flickr.com/photos/kerjsi/3314207679/

Photo by David Shankbone - http://www.flickr.com/photos/shankbone/6946983269/

Photo by Shevchenko Alexander - http://www.flickr.com/photos/sheva4ever/5250446204/

Photo by benuski - http://www.flickr.com/photos/benuski/3421429980/

Photo by Garry Knight - http://www.flickr.com/photos/garryknight/2401806116/

Photo by Vinoth Chandar - http://www.flickr.com/photos/vinothchandar/5406589307/

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Photo by Charlie Brewer - http://www.flickr.com/photos/charliebrewer/382047403/

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Photo by Mariska Richters - http://www.flickr.com/photos/mariskar/4685630181/

Photo by Chris C - http://www.flickr.com/photos/uubergeek/3288576850/

Photo by Olli Wilkman - http://www.flickr.com/photos/dronir/3637162478/

Photo by Bruce Fingerhood - http://www.flickr.com/photos/springfieldhomer/7177140121/

Photo by Cambodia4kids.org Beth Kanter - http://www.flickr.com/photos/cambodia4kidsorg/4451502862/

Photo by Ricardo Alguacil - http://www.flickr.com/photos/resaka/8689788626/

Photo by Lou Gold - http://www.flickr.com/photos/visionshare/4790243060/

Photo by krzyboy2o - http://www.flickr.com/photos/krzyboy2o/3229927139/