It should be the other way around.
Really, I plan to get old and mooch off of my kids. Why else did I have them?
My daughters call us at least once a week to chat, tell us the latest jokes and news or ask Mom for a recipe but they would never consider moving back into their bedrooms. Who wants to live with old people who go to bed early and enjoy quiet evenings?
Remember the old sitcoms with the poor little CPA or salesgirl,whose live-in parent always had some emergency that caused cancelling the younger person's plans?
I know of parents who expected/demanded the child to abandon her/his future plans to take care of the family business or sick family member.
It would be poetic justice if those were the parents that end up financially supporting their offspring.
But I suppose the real reason is those liberal parents who believe in ,and voted for ,the nanny state ,also treated their kids like that,and raised them to be dependent.
Remember that previous generations had an entirely different America inwhich the government didn't control every facet of life and confiscate half or more of the average worker's income.
And just who voted for LBJ,Jimmy Cahtuh,and decades of Democrats controlling the Senate and House?Those 30-something kids didn't.