I did that for a number of years myself, but it's now been a year and a half since I've bought anything substantial. In some ways, the FDA is responsible for that; the Deeming regs caused me to invest in gear that should last a lifetime. I've never added up how much I spent when I was buying that gear, but I know I've saved over $25k not buying cigs.
Yep. I feel the same way about having gotten rid of the nasty smoker's cough and chronic bronchitis that plagued me for well over a decade.
A battery aging/storage study is next.