Was it ever said why Ran chose (or was forced to) live with Kogoro rather than with Eri? It would seem that (before episode 1) living with Eri would have been a much wiser decision because Korogo is... well... in the nicest terms I think think of... a lazy, stupid, drunkard.
In the timeline between their divorce and episode 1 it seems like Eri only became more popular as a lawyer whlie Kogoro became less popular as a detective. It would make more sense for Ran to live with Eri because she was, and probably still, more wealthy.
Did I miss something in the series or was this never fully explained?