Nobody enjoys the prospect of a divorce. Whether you expect the process to be clean or messy, the painful reality is that a "good" divorce is one that has been carefully planned.
When divorcing parties can work together to dissolve their marriage, it can make the process less strenuous. For this reason, the court allows a few different divorce alternatives than traditional litigation.
Setting boundaries is something a lot of people struggle to achieve in their personal relationships. That struggle can intensify when you're also rewriting the rules and revamping the boundaries that once existed with someone who has gone from "spouse" to "co-parent" through divorce.
Nobody stands in front of a minister or judge on their wedding day and thinks about getting divorced -- but divorces happen. When they do, a lot of couples want to salvage some kind of relationship with their ex-spouse, even if they don't have kids. After all, it's perfectly possible for two very decent people to just make a bad match.