When I started his blog, my modest goal was to achieve $50 a month in spare change to invest. As we can see, I have far surpassed that goal already, with several days still left in the month.
Right now, it looks safe to say that I'll hit $70 or more for this month. Assuming I keep up this pace of collection, and continue for the next 35 years, I would be investing a total of $25,200.00. If I get an annual return of 10% on my investments, I would end up with $234,885.05. If I get a 12% average return on my investments, I would end up with $386,109.17. If I wait 40 years, at 12%, my return would be $685,579.22.
Not bad for just collecting spare change at the end of the day.
The next time someone asks you why you're picking up a penny you find, throw those numbers at him.