Not because it's difficult. Because nobody told them it was on the table, and somewhere around year eight they quietly stopped expecting it.
That's the part people don't talk about. There was a thing you wanted out of being married to someone — being properly wanted, being properly known, being taken apart and put back together by the person who knows you best — and at some point you filed it under not for us.
You didn't announce it.
You didn't grieve it.
You just stopped bringing it up.
The couples who find their way into the other one percent don't describe it the way you'd expect.
They don't say it's amazing, or hot, or fun, though it's all of those.