I don't know who you're arguing against, but it certainly isn't me.
As I've stated Oh, at least a dozen times in this thread, I don't want all marriages to be unbreakable. I just want people to be able to set the terms of their marriages as they see fit. No-one should be forced to remain in a marriage they don't want to, but people who break marriage contracts should have to pay damages according to the terms of that contract, just as I can't be made to live somewhere I don't want to, but I will have to pay damages if I break the lease.
It isn't force over trade. Contracts are trade. People must be held to the terms of their contract(or damages) or there is no trade.
So, you choose not to address the grandparent's point about social stigma, and you want to add other 'optional' binding agreements which may themselves have social pressure pushing people to adopt them.
If you want people to find the process of divorce unpleasant, you can rest assured that most of them probably do.
Another month has passed and here is a new rationality quotes thread. The usual rules are: