Putting your money into lottery tickets is foolish IFF* you are subsisting on a paycheck-to-paycheck or welfare payment-to-welfare-payment basis, but if you're in a better situation and the base of your hierarchy-of-needs is covered AND the money you're spending is your own**, what's the harm of taking a chance on winning HALF A BILLION DOLLARS?
Yes, the odds that YOU will win if you buy a ticket may be miniscule, but if you do not buy a ticket, the certainty that YOU WILL NOT WIN is 100%.
* It's in the dictionary, look it up. If you don't own a dictionary, call me "rood" or "harch".
** I realize that these conditions rule out half the people on this forum, but I'm talking to the other half.