Is it still useful to raise children for old age now?

It's of little use. You have to live for yourself. Although most children will not leave their sons behind, as parents, we still have to make some preparations for providing for the elderly when we are young. Parents should also be selfish. It is better to have your own savings than to drag your children down when you get old in the future. As the saying goes, it is better to rely on yourself than others.