It bugs me that places won't sell lottery tickets to people younger than 18. I know that you have to be 18 to gamble, etc. and I'll not get into a rant on how I loathe age restrictions. My point is this:
Stores should sell as many lottery tickets to everyone they possibly can. The trick is that they should not let anyone under 18 REDEEM a winning ticket. Youngsters will learn that they lose, even if they win. Someone else must be contracted with in order to redeem the winning ticket, and the prospect of repayment to the child is uncertain and if paid, would be less than the winning amount. After enough such encounters, kids would wait until they could claim all their winnings.