the thing about the conclusions drawn from data and the parameters selected for are trash.
muh age
muh social norm
muh arrangement
it's POOP.
What matters is two people, preferably modern adults, but not a must, going
I want to actually build a family and have children and I will work on that with my partner, and I will never betray or cheat, because bad actions don't lead to the image of the family I have in mind in OUR future.
And guess what, most people don't like that, don't set goals like that, and don't give a shit about it. No to mention that they don't want to do shit, let alone work on building a family and a relationship over decades. I'm not saying fuck them, but this is why they'll never have a good family. Marrying for reasons outside of that mindset and outlook, and willpower, is just cope or show or shallow stupid action. Or men being lied to as anons point out.
TL;DR: An individual MUST want to live a a family life with children free of deceit, dishonest, infidelity, and cheating. Then they must find the individual with the same vision, goals, mindset of the opposite sex. Otherwise it'll always be a fail.