Who Should Have Princess available and why? (POOL)

[Megas Methuselah]

I voted no because Total Wars diplomacy is so weak that dynastic marriages have no hold, and forgive me if I'm wrong but the only function I found for Princesses was to steal another factions FM's.

I often find that marriage alliances stay strong until the death of the princess. That's one reason why I enjoy princesses (another is because of inbreeding, but that's beyond the point).