start smoking day

Ten reasons to have a start smoking day.
1) It reduces health costs,"...healthy people live to incur greater medical expenditure subsequently on average, more than compensating for the earlier excess expenditure related to obesity or smoking." -McPherson K (2008) Does Preventing Obesity Lead to Reduced Health-Care Costs? PLoS Med 5(2): e37. doi:10.1371/journal.pmed.0050037
2) It increases performance- Heishman SJ, Kleykamp BA, Singleton EG. Meta-analysis of the acute effects of nicotine and smoking on human performance. Psychopharmacology. 2010;210(4):453-469. doi:10.1007/s00213-010-1848-1
3) It increases IQ-"... nicotine acts to enhance physiological processes underlying performance on intellectual tasks".Smoking and Raven IQ Psychopharmacology (1994) 116:382-384
4) It reduces Parkinson's disease-"...This meta-analysis shows that there is strong epidemiological evidence that smokers and coffee drinkers have a lower risk of Parkinson's disease".-Hernán, Miguel A., et al. "A meta‐analysis of coffee drinking, cigarette smoking, and the risk of Parkinson's disease." Annals of neurology 52.3 (2002): 276-284.
5)  If you like slim, body weight tends to be lower among smokers than among nonsmokers-Chatkin, Raquel, & Chatkin, José Miguel. (2007). Smoking and changes in body weight: can physiopathology and genetics explain this association?. Jornal Brasileiro de Pneumologia, 33(6), 712-719.
6)  Smoking is a protective factor for total knee replacement as  nicotine promotes proliferation and collagen synthesis in chondrocytes.-Cigarette smoking and risk of total knee replacement for severe osteoarthritis among Chinese in Singapore – the Singapore Chinese health study.Leung, Y.-Y. et al. Osteoarthritis and Cartilage , Volume 22 , Issue 6 , 764 - 770) 
7) Smoking has been observed to exert protective effects on both the development and progression of ulcerative colitis.-Lunney, P. C. and Leong, R. W. L. (2012), Review article: ulcerative colitis, smoking and nicotine therapy. Alimentary Pharmacology & Therapeutics, 36: 997–1008. doi: 10.1111/apt.12086

8) Smokers are less likely to develop pre-eclampsia (hypertension in pregnancy) than non-smokers-Karumanchi, S. Ananth, and Richard J. Levine. “How Does Smoking Reduce the Risk of Preeclampsia?” Hypertension 55.5 (2010): 1100–1101. PMC. Web. 6 Mar. 2016.

⁹⁾  The inverse relationship between cigarette smoking and endometrial carcinoma risk is well established.
-Felix, Ashley S. et al. “Cigarette Smoking and Endometrial Carcinoma Risk: The Role of Effect Modification and Tumor Heterogeneity.” Cancer causes & control : CCC 25.4 (2014): 479–489. PMC. Web. 6 Mar. 2016.
10) Most people will automatically assume you are an idiot which will save you the anxiety of them figuring this out later.