i don't, but you'd be surprised how many do, and their defense as well. i recently took speech last year in college, and if you hear a good one on Marijuana Legalization in the US, you'd be surprised some of the points they bring up. such as it's healthier then smoking cigarettes.
my roomate saw an issue of High Times that had some exclusive pics of marijuana plants produced already by major tobacco companies, ready to start production the second the US legalizes it (and they know it's coming, too).
well, according to my roomate and his friends anyway, hehe