Several years back a man at the parish asked Father whether it was OK to play the lottery.
"Father, if I win, I promise I'll give a third of all the winnings to the church."
Father made a face, then said, "Well, if God wants you to win the lottery, then you only need to buy one ticket."
Me, I once put a dollar in an office pool to buy as many lotto tickets as the pool was good for; any winnings would be split evenly among the contributors. We won enough to buy another ticket; that one didn't net anything, and so the experiment drew to a close. And that was my one ticket; I'm done.