As has been said in various ways above, we are herd animals anthropologically speaking.
Being cut off from the tribe could mean death in days gone by.
Recognizing this is a hard wired primal response, man has come up with ways to use it. Solitary in prison usually gets the desired result. Religions do it with shunning.
The bright side is that we can recognize it as a basic human response and take steps for our own well being.
Making friends, talking about our feelings about the entire experience, educating ourselves are all tools.
This forum is one of those tools that is an antidote for the bad medicine the Org is attempting when it practices shunning.