It's unseemly business and a sad situation in almost every case.
It happens though and a culture should have a mechanism to address it.
As I have said many times, I have no idea why so many folks place such a high premium on forcing two people who can't stand each other to remain together. It's whacked.
I've been getting some education here on Jewish wedding vows and divorce procedures. It appears that according to DP's views divorce is a perfectly acceptable, if not desirable, option. Christians tend to take Jesus' words on the matter seriously, that what God has joined together, let no man put asunder. There is no question in contemporary America of "forcing" people to remain married, and no one has suggested that is possible. What some are saying is that if you take a vow "till death do us part" to your spouse and your God, you're pretty well stuck with it.
I know nothing of the Dennis Praeger situation and would not presume to judge him. But as a general rule, when there are children of a marriage, the parents' "feelings" are far less important than the welfare of the children in having an intact marriage of the mother and father.