Whitaker did make some huge donations to a couple of churches but that aside I don't think we could call him or Edwards altruists. That considered, if a jackpot winner went to them for advice maybe human natruee would kick in and they'd intentionally give very bad advice, the mindset being they blew theirs so let's make this winner blow theirs.
Re: the over 55 set, they're not the ones I see on the TLC lottery programs buying dozens of cars and such. Many grey areas here but I think the older winners are the less they are out to impress others.
Just consider some of the 'freanzy' threads here on LP when a jackpot is up and people post pictures of really high end cars and mansions, to be bought of course with money they haven't won. Consider who is posting what.
Older people are more likely to realize that material things don't bring happiness or only fleeting happiness. What they really bring is simply the desire for more material things.