I'm fairly new at the game but in the several sessions I've had I have noticed that my rulers just don't like having heirs it seems. Fertile, infertile, no modifiers, some.
Moreover, if the heir is a brother to your current ruler why is he not allowed to get his own heir to keep the succession going? I've experienced a generation gap where the brothers die within a handful of years forcing me into a PU.
I was always led to believe that royal families were big and that the lines of succession were almost always guaranteed with a handful of exceptions throughout history, yet keeping my Romanovs and Habsburgs bloodlines from dying out seems to be a rather difficult task.
Moreover, if the heir is a brother to your current ruler why is he not allowed to get his own heir to keep the succession going? I've experienced a generation gap where the brothers die within a handful of years forcing me into a PU.
I was always led to believe that royal families were big and that the lines of succession were almost always guaranteed with a handful of exceptions throughout history, yet keeping my Romanovs and Habsburgs bloodlines from dying out seems to be a rather difficult task.