It was Alexis de Tocqueville who observed that democracy was doomed. He said it would soon degrade into tyranny. As soon as politicians realized that they could win elections by promising the voters more of other people’s money, it was just a matter of time until they overdid it.
Had he imagined how old people would get, he wouldn’t have been so optimistic. As things developed, politicians noticed two important things: that young people (especially those who hadn’t been born yet) didn’t vote… and old people’s votes could be bought fairly cheaply, at least so it appeared at first.