Let's put that $4 a week into a low-load aggressive growth mutual fund that makes 9.7%.
Over 40 years of playing the lotto, so you can dream, you have given up over $100,000.
You can only hope that your investment makes 9.7% over the next 40 years. That's a gamble, and a pretty aggressive expectation.
I would rather buy the lottery tickets. In 40 years, that $100k that you might make with compound interest under ideal circumstances won't have that much value. Honestly, $100k in today's terms really isn't that much money and it isn't going to make that much of a difference in someone's life. In 40 years, for all we know, that $100k could be the cost of the average mid-sized sedan. ..real big life-changer there!