As with alcohol, you will always have people who choose to use the drug responsibly and irresponsibly. Both can be used in moderation without major health problems or personal issues, but obviously when one is using either drug in large doses every day you are going to see some negative effects. Personally I like smoking better than drinking, but they both have their positive and negative effects. Almost everything in this thread has been stated on here multiple times before, no point in arguing over the same points every three weeks.
And for the whole not publicizing it idea, I agree somewhat. Around campus it's much more socially acceptable to be an obvious toker, but it's not something I would want to make known when I'm older and have a serious career. Fortunately making burritos in my spare time is far from a serious career .