Here in the U.S., at least, I see lots of young people whose parents actively discourage marriage until (fill in blank) . . .
Then at about 25-30, the kids start realizing they'd like to have a family. They start looking around for someone to marry and, guess what, it's not as easy to meet people as it was in college and the few years afterwards.
The other sad thing I have seen more than once is the young person who deliberately delays marriage (urged by parents or not), marries in the early 30's, takes the parents' advice to settle down and build the nest egg for a few years, then gets around to wanting children . . . and it's too late.
Women have been bamboozled into thinking they can snap their fingers and get pregnant any time they want.
Some are sorely disappointed to find out that, after 30, fertility does start a down trend.
Sure, many women get pregnant even in their forties, but for anyone who is sure they want children, any doctor will tell them it's a risk to wait too long.
Of course, that counters the feminazi perspective that a woman must have it all before having children. And it counters the parents who constantly tell their children to make more money first or whatever.
But the biology don't lie.
Most women can get pregnant in their early forties with high-tech help, and if they've been working at something productive all those years, they shouldn't have any trouble affording it. And reproductive technology is galloping forwards so fast that this will be a non-issue by the time today's adolescent girls are old enough to think about having children. Very soon, anyone will be able to have children that are genetically their own, at any age they choose. As it is now, any woman who doesn't have serious health problems, can bear a child that is not genetically her own, well into her 50s, and some are even doing it in their 60s. And IMO, the day when no woman is choosing when and whom to marry "because I'm running out of time to have a baby" can't come soon enough.