Quit MJ after 17 yrs a 1/2 oz a week user. HELP

[Rain Man]

Okay, let's go with $80 a month. We'll assume that the price of marijuana has increased at a typical price rate of 3.5 percent per year, and that instead of spending the money on that, he had started an Individual Retirement Account. With tax-free returns, and compounding at 7 percent per year under the assumption that he was going with a solid conservative stock fund, his marijuana money would be $40,162.96 today if he had invested it.

Hopefully that will help him shake the habit.