No play-a da game, no make-a da rules.
I have heard that elsewhere, but celibate priests still have had the experience of living and growing up in families, and has plenty of time in their formative years to see, some at very close and first-hand experience, how NOT to play the game, and the presence of any number of traps and pitfalls that people can get themselves into.
Virtually ALL of us fall into that category and there's a world of difference between watching a marriage and living it.