Surely This Thing Leadeth into Captivity

Jared and his brother shy away from "anointing" a king.  There's a lot of curious detail in this passage.  To start with, why did the idea of a king bother them?  Had the institution of kingship been part of the temple apostasy they were fleeing?  Why does the record note, and Moroni include, the detail that the brother of Jared's line was initially looked at for the crown?  Did the recordkeepers think that the brother of Jared's descendants were the rightful kings?  Was there a disagreement on this point, and might that have to do with the absence of the brother of Jared's name from the record?  Did the Jaredites' background include an institution of compulsory kingship, slave-kings?