That's precisely the point, that the legal protections in place are not out of line.
You call them "protections" when they are freemasonic, satanic INCENTIVES to leave a marriage that gets temporarily difficult.
Secondly, you insert divorce scenarios where you are blaming the husband-wife, both. "It's usually equal blame", they say. No it's not. If the wife takes the NUCLEAR option to separate/divorce, she is the GUILTY PARTY. She has destroyed the marriage. She has violated her vows. This is the situation we're talking about. If she does not have a church approved reason to do so, the blame is fully on her for taking such a drastic, selfish action.
You minimize the gravity of immorality which a divorce inflicts upon society and on the marriage. A bad marriage is much better and has a shot to succeed. A divorce is final, and the woman will be guilty before God for this. As such, civil laws should also reflect the gravity of this sin, which they do not, therefore a prenup should exist to de-incentivize a sin which is so commonplace today that it's heinousness is forgotten.