Please point out where I claimed smoking and drinking were a good investment.
I'm not saying you're an idiot if you play the lottery. I'm saying you're an idiot if you play the lottery thinking its a better investment than, say, saving money.
The cost of drinking is an equally poor investment, depending on what benefit you seek. I seek the benefit of stress relief/lowered inhibitions/social situations offered by drinking. Alcohol usually delivers these results in a reliable way.
If what you seek in playing the lottery is to win the lottery, then you're making a poor investment because the chances of you coming out with a winning ticket are absurdly stacked against you. If, however, the benefit to you of playing the lottery is a rush from the opportunity to win, then you can consider it a wise investment I suppose.