i think that vampires don't connect with humans because its hard for them to control their thirst not to mention their selves when their around a human. being around humans can raise alot of a vampires animalistic tendancies.
You are correct, in part altough living with humans makes one thirst in any case, imagine smelling blood in the air 3 or 4 houses away from your own home a street away. Or in the right circumstances even smelling blood carried by the wind 3 miles distance from a an accident site on the high way, and ofcourse freaking out your friends as well after all what would you do if your friend tells you there was an accident on the high way, when he or she ask you how you know you reply why I can smell the blood. a few seconds later the EMS teams show up all sirens blazing what would you do?
It is humanities reaction towards things like that, that keeps us a bit wary as far as interaction goes (espesialy offline) but most of us can and has too learn to keep our cool at least for the most part ;-)
:-D Brooding means, thinking of a point made ; words spoken ; debates partaken and even old memories and than after you thought about it, you start all over again.
Brooding is basicly the art of thinking about one subject from all sides of the pectrum the right and wrong sides and everything in between, and than go over it again untill you either give up on it or have found your desired outcome, a selution.
Brooding can how ever also lead to insanity depending the deph and importance of the topic/subject at hand, and the hours / days / months ect. spend on brooding on said topic/subject.