Sure, but that’s one of many factors to consider. Are the improved chances of healthy kids really worth it if it comes at greatly elevated risk of financial duress, where all that extra energy is spent working multiple jobs to keep a roof over everybody’s heads? Is it worth the risk of divorce when you or your spouse get a better feel for yourselves in your late 20s and figure out you’re not actually that well suited for each other?
I’m sure that there are individuals who have all that sorted before their mid-20s, but that’s anything but a rule and nobody should feel pressured to make the leap at that age.