I'm not saying that not caring about ones particular opinion makes you a sociopath - that's misinterpreting my words.
Saying that we are hardwired as a social species is not conjecture, it's what evidence from pretty much every bit of research on the subject shows - from psychological experiments to brainscans showing that feeling "pain" over not being treated nicely isn't a metaphor - it actually activates the same areas of the brain as things that physically hurt.
And how else would you explain that social isolation even works as a form of punishment/torture in the first place?