[analogZero]

I've smoked weed and never touched tobacco. That should give away my answer right there.
I'm free of both now, and I'd still put my vote to marijuana if I had to. Personally I'd go the lesser traveled democratic path and choose to waive my vote, because they're both unfit for consumption in my opinion.
Tobacco is easy. In fact I'd disown anyone who seriously tries to give me apt cause to outbalance the negative effects of tobacco. You'd be not only a tool of tobacco but even worse a tool of marketing. Pitiful.
Marijuana has that little nook of medicinal purpose and the more popular hint of fun, but after years of dealing with it, and having brains enough to see the actual damage it does, you begin to lose interest. Personally it seems kind of boring now.
Point being, they'll both take years off your life, they both put you at risk for cancers of various types, they both have their little hidden shitty secrets and they both cost way too much to upkeep.