Yipes! I’ll bet you are right about the benefits. Sad, huh?
It’s the same in the U.S. They lose money if they marry. And Britain is ahead of the U.S. in terms of the no-marriage culture. If these people are in their late 20s to 30-ish, odds are their parents weren’t married, and it’s never occurred to them that they should be, except as a fun social event.