I'm a spreadsheet guy, not because I want to reduce this hobby to dull accounting, but because I want to buy enough tobacco to last me, and knowing how much I have lets me estimate how long my stash will last.
In case y'all were wondering, I can smoke 2 bowls per week for 34 years, and 5 bowls per week for 14 years at my current stock. I'd like to get up to 5 bowls/week for 50 years, because I'm a young guy.