Checking this again I can’t help but notice he’s not looking for advice. He just announced what he’s doing. Also, he had her cut off her escape route (gainful employment) and made her dependent on him. He won’t make a “legal commitment” and he seems to have already concluded they will split when he said “she’ll end up with at least half of everything.”
He sounds like a manipulator.
Or, inwardly, he recognizes problems which will likely develop in the future and rather than concede that she is Miss Wrong and choose more wisely, in his denial he is trying to mitigate the damage which may unfold.
Sometimes we need to listen to our gut instinct, rather than fight it.
Also, if he dies, she and the kids won’t get survivor SS benefits. He could be condemning them to a life of poverty and hardship.
“Checking this again I can’t help but notice he’s not looking for advice.”
The more I think about it, the more it seems that some goofball told AI to create the most ludicrous question re marriage.
At least if they stay together, they won't be ruining two other perfectly good couples.